Drift genetic provides a mechanism for evolution.
Option A is correct.
How does genetics fit into the process of evolution?The variety of known evolutionary change-causing mechanisms has been substantially expanded by genetics. Most of these mechanisms are non-selective or even counter-selective, but they all involve converting variation between individuals into variance across populations over time and place.
What are the concepts of evolution and genetics?The study of evolutionary genetics focuses on how genetics affects the course of evolution. The evolution of genomic structure is being studied in this context. It consists of population genetics and evolution combined. Genome evolution is the process by which the genome's size and structure evolve over time.
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Do the tissues lining the gastrovascular cavity in Cnidarians differ at any point in the cavity?
All cnidarians have two tissue layers. The outer layer is called the epidermis, whereas the inner layer is called the gastrodermis and lines the digestive cavity. Between these two layers is a non-living, jelly-like mesoglea
Cnidarias have an internal sac for digestion which is called the gastrovascular cavity. The gastrovascular cavity has only one opening, a mouth, through which the animal takes in food and releases waste. Tentacles radiate outward from the rim of the mouth.
The body wall of a cnidarian consists of three layers, an outer layer known as the epidermis, a middle layer called the mesoglea, and an inner layer referred to as the gastrodermis. The epidermis contains a collection of different types of cells. These include epitheliomuscular cells which contract and enable movement, interstitial cells that give rise to many other cell types such as egg and sperm, cnidocytes which are specialized cells unique to cnidarians which in some cnidarians contain stinging structures, mucus-secreting cells which glandular cells that secrete mucus, and receptor and nerve cells which collect and transmit sensory information.
The inner layer, the endoderm , has cells that produce digestive enzymes and break up food particles. The jellylike material between the two layers is called the mesoglea. All of these body layers surround a central cavity called the gastrovascular cavity, which extends into the hollow tentacles.
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List the steps of the Krebs cycle and the products it creates.
Answer:
Step 1: Condensation of acetyl CoA with oxaloacetate.
Step 2: Isomerization of citrate into isocitrate.
Step 3: Oxidative decarboxylations of isocitrate.
Step 4: Oxidative decarboxylation of α-ketoglutarate.
The Krebs cycle results in the production of one FADH2, two NADH, two carbon dioxide molecules, and one ATP/GTP.
Explanation:
Look at this map of current volcano hazards. Click a few volcanoes to determine their warning levels. Why is it possible to have a warning system for volcanoes? If you were a volcanologist, would you watch certain volcanoes on the map more than others?
It is possible to have a warning system for volcanoes because most volcanoes issue warnings before erupting.
As a volcanologist, certain volcanoes on the map will be monitored more than others because some volcanoes are more explosive than the others.
Why do volcanologist monitor volcanoes?Monitoring volcanoes enables volcanologist to understand its activities during an unrest through seismicity, deformation and degassing. Some volcanoes are explosive while others are not so the volcanologist has to monitor the type of magma that flows from it.
The volcanologist also uses the map as an indicator to know when any volcano is scheduled to erupt because some volcanoes provide warnings before eruption.
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Answer:
By examining the pace of change in the gases released, the rate of change in seismic activity, the rate of change in ground deformation, and other variables, a volcanic eruption can be predicted. These are early warning indicators of an eruption. Volcanologists should concentrate on Kilauea and Shishaldin when studying the map because these two volcanoes are at the watch alert level and are more likely to erupt.
Directions
Pour the water into the bowl. Mix in the dirt.
Place the small glass in the center of the bowl. The lip of the glass should stand taller than the dirt and water mixture, but shorter than the sides of the bowl.
Find a sunny spot outside. Place the bowl in direct sunlight.
Place the plastic wrap over the bowl. Put the rock in the center of the plastic wrap, directly over the cup. Gently push down on the rock until the sides of the plastic wrap slope at about a 45° angle. Secure the loose sides of the plastic wrap to the outside of the bowl.
Leave the bowl in the Sun for three or four hours.
Remove the plastic wrap. Look in the cup and in the bowl. Record your observations.
Respond to the questions below.
Questions
Answer the questions in the essay box below.
Is the water in the cup dirty? Why or why not?
What happened to the water in the bowl?
This project simulates a real world process. What does the plastic wrap represent? What does the water in the cup represent?
Which two parts of the water cycle are at work?
WILL MARK BRAINLIEST!!!!
Note that the experiment you are performing is known as "Solar water distillation" experiment.
The water in the cup is probably unclean because the dirt and water combination in the bowl filtered through the plastic wrap and into the cup via evaporation and condensation.
The plastic wrap represents the Earth's atmosphere, while the water in the cup represents purified water collected, or "distilled," by evaporation and condensation.
The water in the bowl would have evaporated and condensed on the inside of the plastic wrap, running down and into the cup. Evaporation and condensation are the two components of the water cycle at an action in this research.
What is the purpose of the above experiment?The goal of the preceding experiment is to illustrate and comprehend the process of solar water distillation, which is a method of purifying water using the energy of the sun.
The experiment replicates the evaporation and condensation processes, in which the sun's heat causes the water in the bowl to evaporate and then condenses on the plastic wrap, pouring down into the cup.
The dirt and contaminants in the water are left in the bowl, resulting in clean water in the cup. The experiment aids in understanding the fundamental concepts of solar stills and how they may be used to purify water in isolated places or during survival scenarios where access to clean water is limited.
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Answer:1. The water in the smaller bowl was not dirty because of condensation.
2. The water in the larger bowl was gone, but the dirt i put in it was still there
3. The water got into the smaller bowl because of codensation. The water in the big bowl got lifted from condensation and bounced off of the plastic wrap and landed in the small bowl.
4. The plastic wrap represents the Earth's atmosphere, while the water in the cup represents purified water collected, or "distilled," by evaporation and condensation.
5. The water in the bowl would have evaporated and condensed on the inside of the plastic wrap, running down and into the cup. Evaporation and condensation are the two components of the water cycle at an action in this research.
Explanation:
Which is not a way that ectothermic animals maintain their bodies at a consistent, appropriate temperature?
A. By generating large amounts of metabolic heat
B. By constricting or dilating blood vessels near the surface of the skin
C. Through behavioral adaptations such as basking in the sun or cooling in the shade
D. Bypassing cool venous blood near warm arteries running in the opposite direction
The method by which ectothermic animals do not regulate their body temperature is: (A) by generating large amount of metabolic heat.
Ectothermic animals such as snakes as well as lizards do not utilize metabolic heat in order to maintain their body temperature. Ectothermic animals are primarily dependent on the external sources of heat. The body temperature of such animals changes according to the external temperature.
On the other hand, endothermic animals tend to maintain a uniform body temperature through the process of metabolic heat production, e.g. birds as well as mammals. The internal body temperature of endothermic animals is almost independent of the temperature of their surrounding habitat.
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What most likely caused a substance to be solid
Which term describes the chromosomal abnormality of having three copies of a single chromosome?
A.haploidy
B.diploidy
C.trisomy
D.tetrasomy
Nondisjunction during meiosis can result in all of the following EXCEPT
Group of answer choices
cells abnormal numbers of sex chromosomes
cells with the normal number of chromosomes
cells with additional chromosomes
cells with missing chromosomes
Answer:
cells with normal number of chromosomes
PLEASE HELP WILL GIVE BRAINLIEST
Answer:
122+293
773
because you are you still
Answer:
Notothenioidei is one of 19 suborders of the order Perciformes. The group is found mainly in Antarctic and Subantarctic waters, with some species ranging north to southern Australia and southern South America.[2][3] Notothenioids constitute approximately 90% of the fish biomass in the continental shelf waters surrounding Antarctica.[4]
773 is answer
Classified each process as weathering, erosion or deposition.
Answer:
lol I don't understand sry
4
What is the
sugar source?
A. where the sugars are needed
B. what is used to transport the sugars
C. where the sugar is made this
Learn how to correctly prepare and observe specimens using _____________________ ______________________ slides.
Microscope slides are used to support samples of organic material to observe under the microscope.
What are microscope slides?
Microscope slides are small flat pieces of thin, delicate glass of varying sizes. Usually, their size is about 75 x 25 mm, but they might vary according to the brand.
They are used to hold samples of tissue of diverse nature to observe under the microscope.
The way to prepare a slide might vary according to what you need to observe under the microscope and if it is a definitive or temporal microscopic prepared.
Sections of the sample are placed over the glass slide and fixated with liquid or other elements. It can be previously stained to observe and differentiate different structures.
Usually, to avoid lens accidents, slides are prepared together with cover glasses, which are even thinner squared pieces of glass that cover the organic material, so the lens does not get in touch with it.
There are graticule slides useful to make counts or take measures of the sample content.
Learn how to correctly prepare and observe specimens using _microscope_ slides.
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The genetic code is carried by the_____ molecule in most organisms
Answer:
The DNA molecule.
Explanation:
Which model accurately represents how DNA replication functions? Explain.
Answer: the semiconservative one
Explanation: it desribes how dna replication works
Plants (such as the trees
shown in this image) that
continue to grow year after
year without dying fall into
which of these categories
of angiosperms?
A. millennials
B. annuals
C. perennials this is answer
Answer:
perennials
Explanation:
Plants that persist for many growing seasons. Generally, the top portion of the plant dies back each winter and regrows the following spring from the same root system (e.g. Purple Coneflower). Many perennial plants do keep their leaves year-round and offer attractive borders and groundcover (e.g. Tickseed, Shasta, and Ox-Eyed Daisy).
Answer: C. perennials this is answer
Question 4
When a neuron is not processing information:
O It is negatively charged
O It has no charge
O It is positively charged
O It is sometimes positively charged, sometimes negatively charged
When a neuron is not processing information It is negatively charged.
The correct option is A.
What is the role of neurons?Signals are sent and received by neurons, often referred to as nerve cells, from your brain. Although they share many characteristics with other cell types, neurons are physically and functionally distinct. Neurons are able to communicate electrical and chemical messages to other cells via specialised extensions known as axons.
Where are neurons found?The bulk of neurons in vertebrates are found in the central nervous system, however some are found in peripheral ganglia and many neurones are found in sensory organs like the retina and ear.
What is a neuron made of?Three basic components make up a neuron: a cell body, two extensions known as an axon, as well as a dendrite (3). The nucleus (2), which regulates the functions of the cell and houses its genetic material, is located inside the cell body. The axon resembles a tail and carries signals out of the cell.
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The complete question is -
When a neuron is not processing information:
A- It is negatively charged
B- It has no charge
C- It is positively charged
D- It is sometimes positively charged, sometimes negatively charged
Preparation of the correct buffer is key to any good biological experiment and it is important that you understand how to calculate the mass of each chemical required to make that buffer and what the resulting concentration of those constituents will be in moles per litre. Your text book explains that moles are just a way to express the amount of a substance, such that one mole is equal to 6.02 x 1023 particles of that substance. These particles can be can be atoms, molecules, ions etc, so 1 mole of water is equal to 6.02 x 1023 water molecules, or 1 mole of Na+ is equal to 6.02 x 1023 Na+ ions. Since different chemicals have different molecular weights (based on the number of protons and neutrons each atom contains) 1 mole or 6.02 x 1023 atoms of oxygen (O) will have a mass of 16g whereas 1 mole or 6.02 x 1023 atoms of sodium (Na) will have a mass of 23g. If you need more information on moles, please read Encyclopedia Britannica's Moles website. Although you may sometimes see it written as g/litre, the concentration of solutions is more often described in term of molarity since it better defines the chemical properties of a solution because it is proportional to the number of molecules or ions in solution, irrespective of molecular mass of its constituents. However, it is not possible to measure moles on a laboratory balance, so in the first instance chemicals are measured by mass (milligrams, grams, kilograms etc) and the number of moles is calculated using the known molecular mass (often called molecular weight and abbreviated to M.W.) of the chemical. As indicated earlier, the molecular mass of a chemical is based on the number of protons and neutrons that is contained in each atom (eg NaCl is made up of one molecule of Na, M.W. = 22.99g and one molecule of Cl, M.W. = 35.45g, so the M.W. of NaCl is 58.44g). These values can be found in the periodic table however the molecular mass of chemicals is generally provided by any vendors of the products and so can also be found on various suppliers’ websites.
Molecular masses of the given sample are:
NaCl: 58.44 g/mole, 80 g, 1.37 M
KCl: 74.55 g/mole, 2 g, 27 mM
Na2HPO4: 142.01 g/mole, 14.2 g, 100 mM
KH2PO4: 136.09 g/mole, 2.4 g, 18 mM
What do you mean by molecular mass?The molecular mass is the mass of a given molecule: it is measured in daltons. Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element.
Moreover, molecular mass or molecular weight is the mass of a molecule. “The molecular mass of a substance is the sum of the atomic masses of all the atoms in a molecule of the substance”. It is expressed in the atomic mass unit(u).
Therefore, molecular mass of an element is defined as the sum of the masses of the elements present in the molecule. Molecular mass is obtained by multiplying the atomic mass of an element with the number of atoms in the molecule and then adding the masses of all the elements in the molecule.
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Why is it important that a pure water IV not be given to dehydrated patients?
Pure water IV is not given to a dehydrating patient because our circulation already includes some salt, IVs also contain saline, a solution of water and salt that is almost isotonic with blood. Water flows from a high concentration to a low concentration, preventing the cells from exploding.
What would happen if you injected pure water into a patient?Patient would pass away. The cell would rupture owing to osmosis because of the disparity in salt content between the interior and exterior. In order to establish an isotonic state, the water would exit the cell and switch from the less concentrated inside to the more concentrated outside, killing the cell and ultimately the patient.
Hence, Continuous monitoring is necessary when receiving a saline water IV injection to make sure the IV solution is giving the patient the proper amount of fluids and minerals.
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african savanna elephant chance of survival
17. According to Sigmund Freud, memories that easily surface into
everyday thought are in which part of the mind?
Hint: In the iceberg analogy, this is the part of the iceberg that's just
below the surface of the water.
Sigmund Freud, memories easily surface into everyday thoughts that are considered conscious parts of the mind.
How conscious mind work?The conscious mind holds all of our ideas, memories, feelings, and desires at any one time.
This includes our memories, which although sometimes unconscious, are easily retrievable and brought back to consciousness.
Therefore according to Sigmund Freud, memories that easily enter into everyday awareness are a conscious aspect of the mind.
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how do you calulate a systems total energy
Read the problem and identify all variables given within the problem as well as all forms of energy using the equation for total mechanical energy, insert calculated values of kinetic energy and potential energy.
Which of the following groups
of animals could be found in
temperate grasslands?
A. deer, fruit-eating birds, lizards, and snakes
B. bison, longhorns, burrowing animals, birds this
that nest on the ground, and foxes
C. migratory animals, oxen, caribou, and artic
foxes
D. lions, rhinoceros, giraffes, and elephants
Would the lac operon work if the repressor protein could not bind to lactose?
Answer: no
Explanation:
because binding of lactase to the repressor protein always the RNA polymerase to bind to promoter thus the structural genes could the production of enzyme lactase however if lactase doesnt bind the active repressor protein binds to the operator hindering the rna polymerase from binding on the promoter so there will be no genes for lactase production transcribed
What are the genotypes and phenotypes of the F2 generation?
Genotypes:
Phenotypes (colors of snapdragons):
There are four phenotypes and nine genotypes in the F2 generation.
In Mendel's dihybrid cross, two traits were in consideration for the F2 generation. In this dihybrid cross, for the seed color and seed type, he crossed two homozygous varieties, round yellow-seeded plants that are dominant RRYY with wrinkled green-seeded plants that are recessive rryy.
After the cross, the product obtained is round yellow, round green, wrinkled yellow, and wrinkled green seed.
So, the 9 genotypes are
RRYY, RRYy, RrYY, RrYy for round yellow phenotype
RRyy, Rryy for round green phenotype
rrYY, rrYy for the yellow wrinkled phenotype
rryy for the green wrinkled phenotype
For genotypic and phenotypic ratio is 1:2:1
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i need help with 4d & 4e please! it’s due tmr
Denaturation of protein is the phenomenon where all the structures of proteins are disrupted except the primary structure. This happens because the primary structure is made up of covalent bonds that cannot be broken down easily. But the secondary or tertiary structures are made of non-covalent structures that are relatively easier to disrupt.
Enzymes are the proteinaceous agents that alter the rate of reactions. The enzyme activity is active when the protein exhibits the tertiary or quaternary structure. This is the reason why when protein denatures the enzyme activity also changes.
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1. Which of the following statements concerning scientific hypotheses is fake? They are constructed based on observations. O They are the same as theories. O They are not always correct. O They must be testable experimentally.
Answer: They are the same as theories.
Explanation: scientific hypothesis is like a theory as it is a possible explanation of an observation.
what is the density of lions (in lions/km2) in the portion of the park that has been studied
The density of lions per each km² in the portion of the park that has been studied is 0.05125 lions/km², i.e., in this case this value equals to 41 lions/800 km².
What is the population density?The population density in a natural population can be obtained by dividing the number of individuals or organisms of a given species per unit of surface area in the ecosystem under study.
In this case, the studied area is 800 km² because it represents 20 percent (i.e. 20%) of an area that has 4000 km², while the number of lions in this area represents the population density and can be obtained as 41 lions/800 km2 >> 0.05125 lions per km².
Therefore, with this data, we can see that the population density is associated with the number of organisms of the same species in a given geographic area, which is generally referred to as the number of individuals per km².
Complete question:
The lion researchers in the film have studied 20% of the park and identified 41 lions. The entire Gorongosa Park is 4,000 km2. What is the density of lions (in lions/km2) in the portion of the park that has been studied?
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What characteristics of the lungs of infants and small children creates increased risk of respiratory disorders
Answer:
The internal diameter of the airways in a child is smaller. Any inflammation or obstruction may cause more severe distress. In general, pediatric airways are smaller, less rigid, and more prone to obstruction. Children also have higher respiratory rates than adults making them more susceptible to agents in the air.
Explanation:
What experiences had Wallace had as a naturalist before traveling to the Malay Archipelago?
Wallace came to the conclusion that new species emerge near closely related species based on his observations of species inside the Malay Archipelago and the Amazon.
what are the some examples of species?The ecological species concept, which defines a species as an organism group framed by the resources they depend on (otherwise known as their ecological niche), as well as the genetic species concept, which assumes that all organisms are capable of inheriting traits from each other within a common gene pool, are two examples.
Which definition of "species" is the most accurate?A group of living things that can naturally breed with each other and generate children that are fertile is commonly referred to as a species. It can be challenging—even contentious—to classify a species, though.
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How many times can a simiulation be repeated
Answer: 200 TIMES CAN SIMULATION BE REPEATED.