if heterozygous round crossed with homozygous round produce 2400 plant how many plant are pure round

Follicular dendritic cells (FDCs) are a specialized type of antigen-presenting dendritic cells that are largely restricted to lymphoid follicles. They capture immune complexes either directly from the lymph or from macrophages and move to the lymphoid tissue, where they transfer complement opsonized antigen to the FDCs.

Follicular dendritic cells in turn attract B cells and activate them. They form dense three-dimensional meshwork patterns within benign follicles, which maintain the follicular architecture.

Follicular dendritic cells take part in B-cell activation and play an important role during affinity maturation by displaying native antigens and by presenting survival signals to B cells and that they are involved in memory B-cell development.

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Answer:

Nitrogen-fixing bacteria and cyanobacteria

Explanation:

Nitrogen fixing bacteria are miniature of urea factories, turning N2 gas from the atmosphere into plant available amines and ammonium via a specific and unique enzyme they possess called nitrogenase.

The fast sodium channel triggers the rapid depolarization phase of the autorhythmic cell action potential.

Rapid sodium influx causes depolarization and reversal of the membrane potential inside the cell from negative to positive. Depolarization is an all-or-nothing event in neurons that is initiated by the opening of sodium ion channels within the plasma membrane. Repolarization, the subsequent return to resting potential, is mediated by the opening of potassium ion channels.

Autorhythmic cells lack a resting membrane potential, which drifts and changes as a result of ionic movement. Hyperpolarisation causes voltage-gated sodium channels known as funny channels to open, allowing [tex]Na^{+}[/tex]Na+ into the cell.

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Challenge that a species face when they are reintroduced to their previous native range is:  single event catastrophes. Challenge they face when released outside of the native range is:  preying on native species.

Although, species are bred successfully in captivity and even if they learn to survive in the wild on its own then also there is the concern that a single event such as a hurricane, drought or disease could decimate the  reintroduced population.

The goal of species reintroduction is to establish a healthy and genetically diverse population to an area where it has been extirpated.

The direct threats of invasive species is preying on native species , outcompeting native species for food, causing disease and preventing native species from reproducing or killing a native species' young.

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The molecules will go away and a protein is created.

The stop codons in the genetic code are UGA, UAG, and UAA. These stop codons indicate the conclusion of the polypeptide chain during translation. There is no amino acid coded by these codons. As a result, they are also known as nonsense or termination codons.

These stop codons have been referred to as umber or opal (UAG), ochre (UAA), and amber (UAG) (UGA). Charles Steinberg and Richard Epstein made Amber public (UAG). To continue the idea of "colors names," they gave the remaining two stop codons the names ochre (UAA) and opal (UAG) while naming the product amber. During protein synthesis, stop codons allow the ribosome to release the newly synthesized polypeptide chain. This occurs because there are no tRNAs that have an anticodon that matches the stop codon.

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The abdominal organ that filters erythrocytes and activates lymphocytes is: (b) spleen.

Lymphocytes are the white blood cells that are the part of our immune system. The lymphocytes generally have  a large nucleus and are agranular. There are three types of lymphocytes: B cells, T cell and NK cells.  All these together constitute 20-40% of all the white blood cells.

Spleen is the secondary lymphoid organ. It is the size of a fist, present on the upper left side of the abdomen. The function of spleen is to regulate the blood cell levels and also it removes the old, damaged and dead blood cells.

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Answer:

In the natural world, limiting factors like the availability of food, water, shelter and space can change animal and plant populations. Other limiting factors, like competition for resources, predation and disease can also impact populations.

Explanation:

Meiosis is a process that takes place while gametes develop and results in cells with half the usual amount of chromosomes.

By preventing reduction division, meiosis prevents an increase in the number of chromosomes.

Any cell in a multicellular organism that is not a germ-line cell is referred to as a somatic cell. Gametes, or germ-line cells, are haploid reproductive cells (eggs and sperm). During fertilization, combine to create a zygote.

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Answer:

Both characteristics of the parental traits for fur colour were present in the offspring, this is because both parents were homozygous dominant for their respective colour and when fertilization occurred, co dominance was shown

a) The Parent (P) Generation genotype is heterozygous dominant and homozygous recessive.

b) The Chi-Square value is 0.2888; while the null hypothesis is "there is no significant distinction between the observed value and desired value, that is the genes are unlinked."

c) As a result of the Chi-Square results there is no significant difference between our actual and anticipated values, and the genes are not connected. As a result, the chi-square test supports our hypothesis.

d) A mutation in "[tex]F[/tex]1" traits will sufficiently modify the heterozygous dominant genotype in the "[tex]F[/tex]2" generation.

a) First, note that A chi-square test is a type of statistical test that is often used in hypothesis testing. This table is used in genetics to determine whether there is a statistical difference between the predicted and actual values. This is also known as the Goodness of Fit test.

Hence, to forecast the parental genotype or P offspring genotype, we must first know the cross-ratio.

The rations are given as follows:

96/372 : 94/372 : 93/372 : 89/372; this give us

⇒ (0.26):(0.25):(0.25):(0.24)

Looking at the above ratios, we can tell that they  are approximate:
1:1:1:1

Whenever a heterozygous genotype is crossed with a homzygous recessive, the ratio is 1:1:1:1. As a result, TT stands for tall, TT stands for short, PP stands for pigment, and PP stands for anthocyanin-less.

The parent's genotype will then be TtPp (Tall, pigment) and ttpp (Tall, pigment) (short, anthocyanin-less). That is, the paternal genotype is heterozygous recessive and heterozygous dominant.

c) In order to explain whether or not the Hypothesis is supported by the chi-square test and justify your explanations, we must compare the degree of freedom with the Chi-Square value with the help of a Squared Distribution Table.

The degree of freedom is equal to n-1, where n is the number of classes. Because there are four classes in this case, the degree of freedom is three.

The probability 0.05 or 5% is considered as a crucial value in statistics. Examine the chi-square distribution table with p = 0.05 and degree of freedom = 3. The answer is 7.8.

If our estimated value is less than this number, our null hypothesis will be accepted; otherwise, we will reject the null hypothesis. Because our chi-square value is 0.288, which is less than 7.8 in the chi-square distribution table, the null hypothesis is accepted.

As a result, there is no significant difference between our actual and anticipated values, and the genes are not connected. As a result, the chi-square test supports our hypothesis.

d) The "[tex]F[/tex]1" generation is the first filial generation of Offspring from the parents, whereas the "[tex]F[/tex]2" generation is the second filial generation of offspring produced via the congenital of "[tex]F[/tex]1" individuals.

As a result, a mutation in "[tex]F[/tex]1" features modifies the heterozygous dominant genotype sufficiently in the "[tex]F[/tex]2" generation.

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Answer:

yes barley

Explanation:

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Answer:

Its decomposition

Explanation:

When an organism dies fungi and bacteria break it down to gain nutrients and return nutrients to the soil, just like how paper is broken down over time except there are no nutrients gained.

Answer:

Option C

Explanation:

It made sense because he ate the raw-ish chicken.

The number of snails and birds decrease in the given food chain.

Food chain refers to the order of events in an ecosystem, where one living organism feeds another organism, and after that organism is consumed by another organism in higher tropic level.

The food chain always begins with producers who make food, proceeds  with other consumers who eat the food and at the comes the topmost predator. In ecology food chain is considered as the series of events that transfer energy and food from one organism to another and is necessary for survival of the organisms .

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Answer:

16 protons and 16 neutrons

Answer:

The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)

Explanation:

for Chargaff's rules

Answer: The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)

Explanation:

The most crucial function of progesterone is preparing your uterus to receive, implant, and sustain a fertilized egg during pregnancy.

Progesterone gets the endometrium ready for the possibility of getting pregnant following ovulation .The lining becomes thicker as a result, getting ready for a fertilized egg. Additionally, it stops the uterine muscles from contracting in a way that would make the body reject an egg.

A key player in maintaining pregnancy, getting the body ready for conception, and controlling the monthly menstrual cycle, progesterone is a hormone that activates and controls vital processes.

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Pallor, purpura, petechiae, increased risk of mucosal bleeding, increased risk of infection, and weariness due to pancytopenia are all signs of aplastic anaemia.

When the body ceases making enough new blood cells, aplastic anaemia develops. You get worn out and more vulnerable to infections and uncontrolled bleeding as a result of the disease. Aplastic anaemia is an uncommon and dangerous illness that can appear at any age.

The bone marrow, the sponge-like substance inside our bones, is where the stem cells in aplastic anaemia are damaged. The bone marrow's stem cells can be harmed by a variety of illnesses and ailments. As a result, less red blood cells, white blood cells, and platelets are produced by the bone marrow.

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After one year, 40% of the species that were present in the vast area had disappeared from the tiny sections.

Isolation might include spending a lot of time alone at home, not having access to resources or participating in the community, and having little to no contact with friends, family, & acquaintances.

Based on how the disease spreads, these unique transmission-based precautions often fall under one of three categories of isolation. The three common types of transmission-based precautions are interface separation, droplets isolation, & airborne isolation, according to the CDC.

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Measure population numbers over time in different areas to determine how population size may be changing in response to human development.

What are the five major causes of extinction?

Causes of Extinction. Habitat Loss; Overexploitation; Introduced Species; Global Pollution and Climate Change are all factors contributing to the extinction of species. Learn more about each of these and other causes of extinction. HABITAT LOSS: The most common cause of endangerment is habitat loss.

What was the cause of the pterodactyls extinction?

“There is broad agreement that the cause of the dinosaur and pterosaur extinctions were one and the same,” University of Texas, Austin paleontologist Brian Andres says. The aftermath of the asteroid impact is the large scale reason for both.

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Answer:

Darwin nunez or Charles Darwin

The binding of a virus or bacteriophage to attach to the host cells determines the host range.

Phages interact and attack a particular type of bacteria; they do not attack other types of bacteria or the cell lines of other organisms. The interactions between phages and their host cells have garnered a lot of attention because of how specifically they occur. The binding thus determines the host range tp attch to the host cell.

Bacteriophage is a virus that can infect bacterial cell. It enters the host cell through the lytic cycle. the virus in the bacterial cell can even kill the host cell or replicate even without killing it. The bacteriophage attaches to the bacterium using its long tail fibers, and after doing so, the virus inserts its genetic material into the host cell to start the reproduction process.

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Yes, the frogs now able to interbreed.

Hybridization is significant because it increases a species' genetic variety—the number of different gene combinations—which is essential for evolution to take place.

A population's members being physically separated. When their original habitat is divided, populations may become physically separated. As in the case of new land or water barriers.

It is well known that geographic isolation contributes to divergent evolution, producing distinctive phenotypes. Sometimes populations with different morphologies are found to be interfertile, while nominal morphological species are found to have reproductive isolation, revealing the existence of cryptic species.

The geographical isolation that results from allopatric speciation, which prevents members of an original species from breeding with one another when they are reunited, is exemplified by islands.

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Answer:

After the drought, there was very little water and many plants died, so the remaining environment was mostly brown. Because of this, having brown coloration was a favorable adaptation  for frogs. The brown frogs are the ones that survived and reproduced, causing the number of brown frogs to increase.  Having green coloration, on the other hand, was an unfavorable adaptation because they were unable to blend in with the surrounding environment. They became less likely to survive and reproduce, causing the number of green frogs to decrease.

Explanation:

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After cell has undergone meiosis ii it enters into the phase of cell differentiation.

Thus, after meiosis II is complete, four haploid daughter cells are created, each of which only has one copy of each chromosome. The haploid cells, also known as primordial germ cells, go through cell development and develop particular characteristics based on their purpose. It produces spermatids and eventually sperm in males, and an ovum or egg in females. These cells are a component of the reproduction process and are known as sexual cells or germ cells.

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If all the kinetochores are not attached to spindle fibers, then we would likely observe aneuploidy in the cell.

What is cell?

The basic biological, structural, and functional units of all living things are cells. A cell is capable of independent reproduction. As a result, they are referred to as the foundation of life. The cytoplasm, a liquid found inside every cell, is surrounded by a membrane. Numerous biomolecules such as proteins, nucleic acids, and lipids are also found in the cytoplasm. In addition, cell organelles have been suspended in the cytoplasm of the cell. The most fundamental building block of life are cells. Therefore, the smallest independent component that we might discover if we dissected an organism down to its cellular level is the cell. Discover the definition, structure, types, and functions of cells by reading the notes on cells.

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The types of fluid for the places mentioned include the following below:

1. Home - Oil, water

2. School/work - Liquid soap, Oxygen.

3. Outdoors - Oxygen, water

This is referred to as a substance or compound and is usually in the form of liquid or gas. It has the ability to continually flow when it is subjected to shear stress or external force.

There are various types of fluids which have their individual properties which is based on their structure and atoms such as oil which is used in the home for cooking various types of food substances.

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Answer:

Home: Cooking Oil is used to cook a variety of vegetables/ foods, Water is a basic need to live and we drink it everywhere including our homes.

School: Liquid soap is used for clean windows, floors and sometimes ourselves, Oxygen is also a basic need just like water to live but for breathing.

Outdoors: Engine Oil is a liquid and used to repair cars and Gas is a fuel used to run cars and vehicles

A terrestrial ecosystem is a community of organisms and their environment that occurs only on land masses, such as continents or islands.

In addition, there are six primary terrestrial ecosystems that are:

shrublandsdesert.

Terrestrial ecosystems are distinguished by their low water availability and the consequent importance of water as a limiting factor, as opposed to aquatic ecosystems. Terrestrial ecosystems are characterized by wider temperature fluctuations, both daily and seasonal, compared to aquatic ecosystems of similar climates.

Rods are responsible for eyesight in . In addition to having poor spatial acuity, they do not mediate colour vision.

Rods are responsible for eyesight in . In addition to having poor spatial acuity, they do not mediate colour vision. Cones are involved in high spatial acuity, colour vision, and activity at higher light levels (photopic vision).

Without any indication of action potentials, rods and cones hyperpolarize in response to light. As it turns out, rod and cone synapses release neurotransmitters in a manner similar to that of any other cell.

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Answer:

I think C is correct

Explanation:

I am not really sure

Predicted size of the corresponding mature mRNA in base pairs (bp), excluding the 5' cap and 3' poly-a tail is 295 bp.

1000 base long mRNA, this means that its double-stranded version will be 500 bp long. Messenger RNA or mRNA is a type of single-stranded RNA involved in protein synthesis.

mRNA is type of RNA that is important for protein production. In human cells, mRNA uses the information in genes to create a copy for making proteins. Many mRNA vaccines helps to protect humans from various disease like recently scientist have developed covid vaccine using mRNA .

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