1. What are the genotypes possible for a person who has: A blood?
B blood?
O blood?
AB blood?

A - AA/AO

B - BB/BO

O - OO

AB - AB

Explanation:

An individual inherits their blood type from their parents like it inherits many other traits. However, there's something interesting about this.

Blood type O is always recessive, which means that an individual needs to get a copy of the O allele from both of its parents in order to have the blood type O (genotype OO).

Blood types A and B are codominant to each other, which means that the effect of both A and B alleles is expressed if an individual receives them. If an individual receives the A allele from one parent and the B allele from the other, it will have the AB blood type (genotype AB).

Blood types A and B are both dominant to the O allele. This means that an individual can have blood type A or B either by inheriting two copies of the A or B allele or by inheriting one copy of the A or B allele and one copy of the O allele (genotypes AA/AO and BB/BO).

You can take a look at the image below to understand this more easily:

a lot

explanation:

i have read the novel roll of thunder hear my cry by mildred d. taylor.

1. this isn't like any other story i've read or watched because it is about a black family in mississippi right after slavery in the u.s. had become illegal. most of the novels i have read were about slavery. another point is that the author of the novel used symbolism in a way i haven't seen before. for example she uses thunder as something negative meaning something bad will happen. but by the end of the novel, she made thunder a good thing.

2.   one character that changed during the novel was stacey. stacey is the eldest child of the black logan family. around the begging of the novel stacey was avoiding the white boy jeremy simms. he had a dislike for jeremy's family. but at the end of the novel stacey began to like jeremy.

3. the author starts the novel with the problem that the children of the logan family have to avoid the white kid school bus while walking to school.