Take out a piece of paper and pencil to solve the Dihybrid cross.
Rabbits have two unlinked allele pairs that affect fur color. The table shows how allele pairs affect fur color. The term “agouti” describes fur with pigmentation that gives the fur a banded appearance.
Rabbits with the aa allele pair are albino, regardless of the second allele-pair combination.
What is the probability of albinism in the offspring of a cross between two rabbits with AaBb alleles?
a
1/16
b
3/16
c
4/16
d
9/16
choose the correct answer
To solve this dihybrid cross, we need to determine the possible allele combinations in the offspring and then determine the probability of albinism.
The allele pairs for the two rabbits are AaBb.
When these alleles are crossed, the possible allele combinations in the offspring are:
AB, Ab, aB, ab
However, according to the given information, rabbits with the aa allele pair are albino. This means that only the combination ab will result in albinism.
Out of the four possible allele combinations, only one (ab) will result in albinism. Therefore, the probability of albinism in the offspring is 1/4 or 1/16.
So, the correct answer is a) 1/16.