Answer:

Explanation:
B-cells engulf an antigen by endocytosis.
<u>Endocytosis:</u>
The process by which cell takes up external materials by fusing them with plasma membrane is called endocytosis.
After engulfing the antigen, B-cells become sensitive to the pathogen.
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Hope this helped!
<h3>~AH1807</h3>
That is where the fibers of the optic nerve exit the eye extending into the brain. there are no rods and cones there as a result.
we can say that (F) is the dominant healthy gene and (f)is the recessive anemia gene
Falconi anemia is a recessive autosomal disease, therefore it will affect men and women equally
1)Arlene's genotype is (ff)
2)Ann's genotype is (Ff)(she's a carrier). Michael's genotype is (Ff)(also a carrier)
3)George's genotype is (Ff)
4)Sandra's genotype is, most likely (FF)
5)Sam, Ann and Michael are most likely carriers.