What we eat (our environment) and genetic variables come together in epigenetics.
Describe epigenetics.
A branch of genetics called epigenetics investigates how variations in the environment might affect how genes are expressed.
DNA methylation, histone alterations, and non-coding RNA pathways are examples of epigenetic mechanisms.
In conclusion, epigenetics is the fusion of genetics and environment.
The color distribution for a specific population of snakes is 160 blue, 50 turquoise, and 40 green. The allele for the color blue is represented by BB, whereas the allele for the color green is represented by BG. Both alleles demonstrate incomplete dominance.
BBBB = 0.64
BBBG = 0.20
BGBG = 0.16
The color distribution for a specific population of snakes is 160 blue, 50 turquoise, and 40 green. The allele for the color blue is represented by BB, whereas the allele for the color green is represented by BG. Both alleles demonstrate incomplete dominance
Genotype frequency is calculated as the ratio of the number of people with that genotype to all people. Blue gecko genotype frequency (BBBB) is 160/(160 + 50 + 40) = 160/250 = 0.64. Turquoise gecko genotype frequency (BBBG) = 50/250 = 0.20 Green gecko genotype frequency (BGBG) = 40/250 = 0.16
When both alleles of a gene are only partially expressed at a locus, it is known as incomplete dominance. This sort of gene interaction frequently produces an intermediate or distinct phenotype. It's sometimes referred to as "partial domination."
To learn more about Incomplete dominance please visit
https://brainly.com/question/14053639
#SPJ4
The musculature includes muscles that move the vertebral column and muscles that move the ribs. lower limb upper limb trunk head and neck
The three muscles which control the vertebral column are the semispinalis, multifidus, and rotatores.
However, these muscles helps tp o the vertebral column and also have a role in proprioception and balance.
What are muscles?Muscles can be defined as a band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body.
So therefore, the musculature includes muscles that move the vertebral column and muscles that move the ribs, lower limb upper limb trunk head and neck
Learn more about the muscular system:
https://brainly.com/question/1283837
#SP1
Widely distributed in many foods, phosphorous is especially abundant in foods high in:_______
a. starches.
b. dietary fiber.
c. fat.
d. protein.
D. Protein.
Widely distributed in many foods, phosphorous is especially abundant in foods high in protein.
Phosphorus is found in many foods and is found in high amounts in foods that contain protein. Phosphorus is found in smaller amounts in vegetables and fruit. Phosphorus is the second most abundant mineral in the body, second to calcium.
The main function of phosphorus is in the formation of bones and teeth. It plays an important role in how the body uses carbohydrates and fats. It is also needed for the body to make protein for the growth, maintenance, and repair of cells and tissues.
To learn more about protein here
https://brainly.com/question/2193769
#SPJ4
Neurons of the supra-optic and paraventricular nuclei of the hypothalamus manufacture:_____.
A. FSH and PRL.B. TSH and FSH.C. ADH and OXT.D. GHIH and GHRH.E. CRF and GnRH.
Neurons of the supra-optic and paraventricular nuclei of the hypothalamus manufacture antidiuretic hormone (ADH) and oxytocin and is denoted as option C.
What is Hypothalamus?This structure in the brain manages the hormones thereby serving as the control coordinating center.
The paraventricular nuclei of the hypothalamus is adjacent to the third ventricle and produces ADH and OXT.
Read more about Hypothalamus here https://brainly.com/question/11352172
#SPJ1
Swallows return to the same nesting colony every year, sometimes even the same nest. What's the best explanation for this behavior
Swallows like to reuse their nests year after year and make them out of mud pellets.
The process of building a nest requires a lot of energy, and swallows can make over 1,000 journeys. Unoccupied nests are taken over by new pairs.
Most songbirds only utilize a nest for one clutch or breeding season before building a new one, assuming they live to reproduce again. However, one study found that 44% of pairs of swallows returned to the same colony and used the same nest.
The material used to construct the nests is the main distinction between the two nests. Grass, sticks, and other materials are employed in the case of weaver birds. A swallow's nest is constructed of moist mud as well.
To learn more about swallows please visit -https://brainly.com/question/14666998
#SPJ4
during what phase of a muscle twitch chemical changes such as the release of calicum are according intracelluary as rthe muscles prepare for contractrion
During latent phase of a muscle twitch chemical changes such as the release of calicum are according intracelluary as rthe muscles prepare for contractrion.
What are the phases of a twitch contraction?
A single contraction is called a twitch. A muscle twitch has a latent period, a contraction phase, and a relaxation phase. A graded muscle response allows variation in muscle tension.What is a latent period ?
The amount of time that passes between an action potential being generated in a muscle cell and the beginning of muscular contraction.
What is a muscle twitch?
The fundamental reaction of a motor unit to a single stimulus is a muscle twitch. Muscle Twitch in three different states . Excitation of the muscle fiber takes place during the latent phase, and calcium ions are released from the sarcoplasmic reticulum into the cell's cytoplasm.What happens during latent period of muscle twitch?
A single muscle twitch consists of three parts. the contraction phase, the relaxation phase, and the latent period, often known as the lag phase. The action potential reaches the muscle, and the latent period is the brief (1-2 msec) interval before tension is seen in the muscle.Learn more about latent period
brainly.com/question/10696517
#SPJ4
Which procedure involves excision of the pituitary gland through the sphenoid sinus without disturbing brain tissue?
According to the research, the correct option is transsphenoidal surgery, this procedure implies the excision of the pituitary gland through the sphenoid sinus without disturbing brain tissue.
What is transsphenoidal surgery?It is a treatment for pituitary tumors that uses the endoscope as a source of vision and that allows the doctor to reach the pituitary gland and nearby areas through the sphenoid sinus, preserving nasal anatomy and functionality.
Generally, this technique is indicated for patients with microadenomas as well as macroadenomas and other pathologies in the region that cause symptoms such as vision loss, headaches, or hormone-related problems.
Therefore, we can conclude that the correct option is transsphenoidal surgery, this procedure implies the excision of the pituitary gland through the sphenoid sinus without disturbing brain tissue.
Learn more about pituitary tumors here: https://brainly.com/question/4294388
#SPJ1
A student camping in a wilderness area where Rocky Mountain spotted fever is endemic discovers a tick on her leg. She easily removed it because it had just attached to her leg. What is her risk for contracting RMSF
The risk of contracting RMSF is very low, because Rickettsia is activated only after hours of feeding.
What is Rock Mountain Spotted Fever?A tick bite can transmit the bacterial sickness known as Rocky Mountain spotted fever (RMSF). It results in nausea, vomiting, a spike in temperature of 102 to 103°F, headache, abdominal pain, rash, and aches and pains.
In the US, RMSF is regarded as the most dangerous infection transmitted by ticks. Even though the infection can be properly treated with antibiotics, delaying treatment might result in catastrophic harm to internal organs or even death. By avoiding tick bites or quickly removing a tick that has already bit you, you can lower your risk.
To learn more about bacterial fever with the help of the given link:
https://brainly.com/question/13048010
#SPJ4
In an experiment on an animal model in which the synapsin gene is knocked out, you measure the density of synaptic vesicles in the presynaptic terminal within the active zone and outside the active zone in both knockout and control animals. Given what you know about the function of synapsin, what would you expect to find
When the synapsin gene is knocked out there will be fewer vesicles in the reserve pool in knockout animals than in controls.
Synapsin
Synapsins are a family of evolutionarily conserved phosphoproteins seen in all synapses. They are reversibly associated with synaptic vesicles. They are responsible for holding the vesicles in place.
There are different isoforms of synapsins. Both synapsin I and synapsin II are the major isoforms of synapsin and are related to the elongation of axons and the synaptic vesicle fusion kinetics regulation. Synapsin III is involved in neurogenesis and synaptogenesis regulation.
Functions of Synapsin
Presynaptic terminal formationRegulating the vesicle reserve poolAxon elongationDocking of synaptic vesiclesSynaptogenesisNote: - The question seems to be missing the options which possibly could be,
"There will be fewer vesicles in the reserve pool in knockout animals than in controlsThere will be more vesicles in the reserve pool in knockout animals than in controlsThere will be no vesicles in the reserve pool in knockout animals than in controlsThere will be no vesicles docked in the active zone in knockout animalsThere will be no difference between knockout animals and controls"Learn more about synapses here:
https://brainly.com/question/27381250
#SPJ4
What would you predict would be the result of a cell bypassing the spindle assembly checkpoint before it is appropriate?
The process inactivated the checkpoint arrest even through the damaged persists. Spindle assembly checkpoint before is result in cells existing mitosis without forming a spindle or segregating their chromosome.
During 3rd checkpoint M-phase and called the spindle checkpoint and chromosomes attach to mitotic spindle, sometime more than one chromosome is attached. Cell cycle checkpoint cant determine the cell will divide. The progression of cell to the next stage in the cycle can halted conditions are favorable.
The cell division under the conditions where it was wrong to do so. Unreplicated chromosome could be put through mitosis. If the daughter cells are ignored the checkpoint and divided there would soon be abnormal mass of cells.
To learn more about the chromosome here
https://brainly.com/question/1596925
#SPJ4
The most complicated spinal reflexes are called:
Peer review is the process
A.
by which scientific work is reviewed by anonymous, independent experts.
B.
by which scientists are rated on their yearly contributions to the field.
C.
through which a theory can become a law.
D.
None of the above
Peer review is the process (A) by which scientific work is reviewed by anonymous, independent experts.
Peer review is the procedure by which an expert or group of experts evaluate a scientific research article or research work before publishing it in any scientific journal. The experts assess the validity, quality and originality of the scientific work or research article for publication.
To know more about peer review, click on
https://brainly.com/question/2704940
https://brainly.com/question/2126886
#SKPG
A/an _________________________ is the surgical removal of a nephrolith through an incision in the back.
Nephrolithotomy is the surgical removal of a nephrolith through an incision in the back.
These procedures are treatments for kidney stones that are used in patients with large or irregularly shaped kidney stones, people with infections, stones that have not been broken up enough by SWL (extracorporeal shock wave lithotripsy) or those who are not candidates for another common stone treatment, ureteroscopy.
Stones bigger than 2 cm (the size of a marble) require this procedure.
Procedures involve entering the kidney through a small incision in the back. Once the surgeon gets to the kidney, a nephroscope (a miniature fiberoptic camera) , threaded in through the hole.
To learn more about nephrolithotomy, here
brainly.com/question/16578975
#SPJ4
Chemical pesticides are used by farmers to kill pests in farms. The long-term use of chemical pesticides has been found to be harmful for the ecosystem. Jerry, a farmer, uses chemical pesticides to protect his crops. In this scenario, the use of chemical pesticides _____.
Chemical pesticides are used by farmers to kill pests in farms. The long-term use of chemical pesticides has been found to be harmful for the ecosystem. Jerry, a farmer, uses chemical pesticides to protect his crops. In this scenario, the use of chemical pesticides is still harmful due to its permanent effects on the ecosystem.
Pesticides are chemical substances that are used to eradicate undesired organisms such as insects, rodents, fungi, and plants (weeds). There are more than a thousand different insecticides in use today. Pesticides are used in agriculture to kill pests that harm crops and in public health to kill disease vectors like mosquitoes.Pesticides have a terrible impact on human health. Pesticides have been shown to have an adverse effect on development and reproduction, as well as to damage the kidneys and liver and disturb the endocrine system.Pesticides, which kill weeds or insects, can be poisonous to a variety of other creatures, such as fish, birds, helpful insects, and non-target plants.learn more about Chemical pesticides here: https://brainly.com/question/12912926
#SPJ4
which of the following abiotic factors can cause harmful effects such as acid rain when too much is releadein to the atmosphere
Abiotic factors can cause harmful effects such as acid rain when too much is releadein to the atmosphere are Carbon, and Sulfur.
Acid rain
Acid deposition, often known as acid rain, is a general name for any type of precipitation that contains acidic elements, such as sulfuric or nitric acid, which falls to the ground from the atmosphere in wet or dry forms. This can apply to rain, snow, fog, hail, and even corrosive dust. Sulfur dioxide (SO2) and nitrogen oxides (NOX) that are released into the atmosphere and carried by air currents and wind result in acid rain. Water, oxygen, and other molecules react with the SO2 and NOX to generate sulfuric and nitric acids. While some of the SO2 and NOX that create acid rain come from natural sources like volcanoes, the majority of it is produced by burning fossil fuels.
Learn more about acid rain here:
https://brainly.com/question/22143130
#SPJ1
one way that the investigator could increase the validity of the investigation
Answer:
for different purpose like accuracy, validate
Please help !!
1 ) Explain how competition between members of the same species helps to control population growth.
2) Name two factors that the crop plants and weeds may complete for and explain the importance of each.
3) Farmers usually prefer to spray herbicides on weeds early in the growing season. suggest why.
Competition help to regulate population growth since only those who are able to obtain food survive.
Crop plants and weeds may compete for water and for sunlight.
Farmers spray herbicides early in the growing season to avoid competition between crop plants and weeds.
What is the effect of competition on population?Competition among species help to regulate population growth by ensuring that only those who are able to obtain food survive. Thus, only fit individuals of a species survive.
Crop plants and weeds may compete for water because water enables them to carry out metabolic activities of growth and development.
Crop plants and weeds may also compete for sunlight and they need sunlight to carry out photosynthesis.
Farmers spray herbicides early in the growing season in order to avoid or reduce competition between crop plants and weeds.
In conclusion, competition among species helps to control overpopulation.
Learn more about competition among species at: https://brainly.com/question/9428741
#SPJ1
INTRODUCTION
The decline in weed seed numbers in arable fields (approx. 95%) over the course of the 20th century is witness to the success of weed control measures (Robinson and Sutherland, 2002). This success in weed control has resulted primarily from the extensive use of herbicides, changes in crop rotations and a range of cultivation methods. However, the sustained use of a range of agro‐chemicals, in recent years, has resulted in an increase in the number of herbicide‐resistant weed species (Powles and Shaner, 2001), a shift in the weed flora of arable fields from one of mixed weeds to one dominated by grass weeds (Barr et al., 1993) and increasing environmental and public health concerns over the use of pesticides (Conway and Pretty, 1991).
give my answer a speshull thanks
Rapid lateral flow assays based on the quantification of magnetic nanoparticle labels for multiplexed immunodetection of small molecules: application to the determination of drugs of abuse
A rapid lateral flow immunoassay is presented that uses carboxyl-modified superparamagnetic nanoparticles as labels that can be quantified by highly sensitive multi-channel electronic readers. The approach is generic in that it is likely to be applicable to numerous small molecules. The method permits both single- and multiplex assays at a point-of-need without sample pretreatment. It is user-friendly and offers attractive characteristics demonstrated here for detection of morphine, fentanyl and methamphetamine in . The competitive immunoassay uses commercially available reagents that do not require special permissions. After migration of sample, the lateral flow test strips are subjected to an alternating magnetic field at two frequencies. The response from the nanolabels is readout at a combinatorial frequency from the entire volume of a porous immunochromatographic membrane by the magnetic particle quantification technique.
application to the determination of drugs of abuse.
Estimating the detection time of a drug in urine is complex because of many different influencing factors and the lack of experimental data. Detection times vary depending on dose and route of administration, metabolism and characteristics of the screening and confirmation assays. Using a cut-off value of 1000 ng/mL, urinary samples can be positive for amphetamine for up to 5 days after intake of the drug.
for more information please visit:
https://brainly.com/question/13745375
#SPJ4
Cytotoxic t cells are able to recognize infected body cells because _______________________.
Cytotoxic t-cells are able to recognize infected body cells because the infected cells display foreign antigens.
What do cytotoxic killer T cells do?The helper T cell and the cytotoxic T cell are the two main subtypes of T cells. Helper T cells, as their names imply, "assist" other immune system cells, whereas cytotoxic T cells "kill" virally-infected cells and tumors. The TCR cannot directly bind antigen, unlike an antibody.
Killer T cells are also known as "cytotoxic" or "cytolytic" cells because they have unique molecular weapons that allow them to attack and kill other cells that are showing targets they are familiar with, such as a virus-infected cell or even a malignant cell. The processed cancer cell antigen, which is solely presented by MHC-class I, must be recognized by cytotoxic T lymphocytes. Helper T cells binding to a processed antigen on the same dendritic cell as the MHC-class II presenting a processed cancer cell antigen enhances cytotoxic T-cell complete activation.
Learn more about T-cells here:
https://brainly.com/question/9292555
#SPJ1
In prokaryotes, new mutations accumulate quickly in populations, while in eukaryotes, new mutations accumulate much more slowly. The primary reasons for this are ________.
In prokaryotes, new mutations accumulate quickly in populations, while in eukaryotes, new mutations accumulate much more slowly. The primary reasons for this are prokaryotes reproduce quickly and have vast populations.
Prokaryotes V/S EukaryotesProkaryotesProkaryotes are organisms consisting of cells that don't have cell nuclei or any organelles that are enclosed in membranes. It follows that prokaryote's DNA is not contained within a nucleus.
The following components could be found in a normal prokaryotic cell:
The membrane enclosing and guarding the cell is known as the cell wall.All of the cell's internal components, excluding the nucleus, are called cytoplasm.Some prokaryotic cells have filaments made of proteins called flagella and pili.A nucleoid is a cell structure that resembles a nucleus and contains genetic material.A plasmid is a little DNA molecule with independent reproduction.EukaryotesEukaryotes are organisms made up of cells with membrane-bound organelles and a nucleus that contains DNA in the form of chromosomes. Eukaryotic organisms can have several cells or just one cell. Eukaryotes make up all animal life. Protists, fungi, and plants are examples of additional eukaryotes.
Learn more about Prokaryotes and Eukaryotes here:-
https://brainly.com/question/1698324
#SPJ4
The continuous, low-level extinction of species is referred to as ___ extinction.
The continuous, low-level extinction of species is referred to as mass extinction.
A widespread and quick decline in the diversity of life on Earth is known as an extinction event. A sudden shift in the diversity and abundance of multicellular creatures serves as a telltale sign of such an occurrence. It happens when the rate of diversification outpaces the rate of extinction.A mass extinction event occurs when a species disappears far more quickly than it is replaced. This is typically understood as the loss of almost 75% of all species over a "short" period of geological time, or fewer than 2.8 million years.The Cretaceous-Paleogene extinction, sometimes known as the day the dinosaurs died, is the most well-known of all the mass extinction events.
learn more about mass extinction here: https://brainly.com/question/1048615
#SPJ4
Organisms without exonuclease activity would replicate somewhat faster than other organisms, since time would not be spent checking newly synthesized DNA and excising mismatched bases. The mutation rate would also be higher true or false
This is true that The mutation rate would also be higher.
What is mutation?A mutation is a change in the nucleic acid sequence of an organism's, virus's, or extrachromosomal DNA's genome. DNA or RNA can be found in the viral genome.
Environmental elements known as mutagens are what trigger mutations. Radiation, chemicals, and pathogenic agents are examples of mutagens. Mutations may occur naturally spontaneously.
Because it generates a new DNA sequence for a particular gene, the mutation is crucial in the initial stage of evolution because it results in the creation of a new allele. Through intragenic recombination, recombination can also produce a new DNA sequence (a new allele) for a particular gene.
To know more about mutation refer to: https://brainly.com/question/9598940
#SPJ1
Plants with higher numbers of stomata on the surfaces of their leaves would likely have higher rates of transpiration when compared to plants with lower numbers of stomata because __________
Plants with higher numbers of stomata on the surfaces of their leaves would likely have higher rates of transpiration when compared to plants with lower numbers of stomata because almost 97 % of water from plants is lost through stomatal transpiration.
What is Transpiration?Transpiration is a process which involves loss of water vapour through the stomata of plants and this loss cools the plant down when the weather is very hot, so the water from the stem and roots moves upwards or is 'pulled' into the leaves.
The water remaining 97–99.5% is lost by transpiration and guttation through the presence of stomata in the leaves. In this process, water evaporates in the atmosphere from plant leaves and other part.
There are different types of transpiration which depends on the organ that performs transpiration
Stomatal transpirationCuticular transpirationLenticular TranspirationThus, plants with higher numbers of stomata on the surfaces of their leaves would likely have higher rates of transpiration when compared to plants with lower numbers of stomata because almost 97 % of water from plants is lost through stomatal transpiration.
Learn more about Transpiration, here:
https://brainly.com/question/13891305
#SPJ2
what element DOES NOT make up amino acids
The elements that make up amino acids are as follows:
NitrogenHydrogenOxygen CarbonWhat is an amino acid?Amino acid is the basic and structural unit of polypeptides and proteins.
The amino acid has a general structure made up of the following:
Amine group = NH2Carboxyl group = COOHR groupTherefore, it can be said that the elements that make up amino acids are as follows:
NitrogenHydrogenOxygen CarbonLearn more about amino acids at: https://brainly.com/question/14583479
#SPJ1
What is the most likely basis for future human evolutionary change?
The most likely basis for future human evolutionary change is technological change.
Evolution is a natural process that takes millions of years to occur. In this, an organism evolves on the basis of changing environment, living conditions, availability of food, living place and pattern, etc.
Natural selection works as an important force in this process as nature selects the fittest individuals which means nature selects those individuals who have the most appropriate genes according to the current conditions for survival to reproduce and pass those genes to the next generation.
The differences in the genes depend on an individual's ability to adapt to the changes in the environment and change their living style and habits accordingly to survive.
Therefore, in the current scenario, technology is heading to be the world leader and humans have to learn to adapt to the changes accordingly and evolve in the same way so that they better fit with the coming changes and can survive easily.
Learn more about evolution here
brainly.com/question/13170903
#SPJ4
A regulator
regulator
O
is the part that connects to your scuba cylinder and a
is the part you place in your mouth and use to breath.
alternate air source / first stage
second stage/first stage
first stage/second stage
low pressure inflator/second stage
Answer:
First stage
Explanation:
Mark brainliest
White moths were found in huge numbers in the english city of birmingham. these moths could be easily camouflaged by the trees because white lichen covered the bark. because of sudden industrial development, the city’s trees became covered with soot. how will this change affect the population of the white moth? a. the population will decrease. b. the population will increase. c. there will be no change in their population. d. the population will change their food preferences.
The correct answer is a. the population will decrease of white moths.
White mothsThe white satin moth, also known as the satin moth or Leucoma salicis, is a member of the Erebidae family of moths. Carl Linnaeus published the first description of the species in the tenth edition of Systema Naturae published in 1758. It can be found in Europe, including the British Isles, but not in the far north. Additionally in North America, where it was first introduced in the 1920s. The wingspan is between 37 and 50 mm. White, occasionally ochreous, or in the male, even with a blackish costal edge; dark on the head, collar, and antennal pectinations. Broad black rings on the tarsi and tibiae. The East Asian species Leucoma candida has distinct male genitalia, considerably purer glossy white wings that are completely opaque and have thicker scales, and it is generally smaller with narrower wings.
Learn more about white moths here:
https://brainly.com/question/3222554
#SPJ4
Answer: the population will decrease option A
Explanation:
IF YOUR ON PLATO LAB
HOPE THIS HELPS
Assume the oligopeptide with the amino acid sequence: alphahelicks, forms one continuous α-helix. the carbonyl oxygen of the glutamic acid residue is hydrogen bonded to the amide nitrogen of?
Alpha helix is packed and-this twisting formation is that the amino acide chain-will form a rod . The amino acid methionine , alanine, leucine , glutamate and lysine are form alpha helix.
The alpha helices may range in length from 4 to 40 amino acids but typical alpha helix is about 10 amino acids long. Hydrogen bond between the hydrogen in an amino group and the oxygen in carboxylic group on the amino acid causes this structure.
Alpha helix is characterized by a tight right handed twist in the amino acid chain which causes rod shape.Hydrogen bonds to the backbone of amino acid .It is made of two alpha helices of sequence of amino acids.
To learn more about Alpha helix here
https://brainly.com/question/13163002
#SPJ4
What part of the cell modifies,
sorts, and repackages proteins?
A. Golgi body
B. mitochondria
C. ER
Answer:
A: Golgi body
Explanation:
I WILL MARK YOU BRAINLIEST IF YOU ANSWER THIS.
Answer:cell is the basic unit of life.
A cell may be unicellular or multicellular
Explanation:
Answer:
Two of the three points of cell theory:1) All living organisms are composed of one or more Cells.2) Cell is the basic, structural and functional unit of living organisms.Hope this helps.Good luck ✅.