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ser-zykov [4K]
3 years ago
11

What is a B cell? Apex

Biology
2 answers:
kykrilka [37]3 years ago
7 0

Answer:

Explanation:

B cell is also called B lymphocyte. It is a type of leucocytes or white blood cell. Some of the B cells mature in the bone marrow into the plasma cells and some mature as memory cells. The plasma cells make antibodies which fight against the disease-causing pathogens which entered the body. Thus, B cells are associated with the immune system of the body.  

zhuklara [117]3 years ago
4 0

Answer:

Laying the viral antigens activate specialized white blood cells called <em>B cells</em>. The <em>B cells</em> change into plasma cells, which can then create specific antibodies to attach to the viral antigens. Antibodies make the viruses clump together, so they are then easier for white blood cells to destroy.

Hope that helps!!

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A male is heterozygous for the trait that produces freckles on the skin, and he has freckles. if he marries a woman who is also
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<span>F- allele for freckles
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1) The man is heterozygote and has freckles, its indicating that the allele for freckles is dominant.
A cross between him and a woman who is also </span><span>heterozygote: Ff x Ff
it would result in the following probabilities:
- 1/4 - homozygote with freckles: FF
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Their son would have a probability of 75% of being born with freckles.


2) The cross resulted in this probabilities:
</span><span><span>- 1/4 - homozygote with freckles: FF
- 2/4 - </span><span>heterozygote with freckles: Ff
- 1/4- </span><span>homozygote without freckles:ff
So, the chance of being born heterozygote for this gene is 2/4, which is the same as half (50%).
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