Take out a piece of paper and pencil to solve the Dihybrid cross.%0D%0A%0D%0ARabbits 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.%0D%0A%0D%0ARabbits with the aa allele pair are albino, regardless of the second allele-pair combination.%0D%0A%0D%0A%0D%0A%0D%0AWhat is the probability of albinism in the offspring of a cross between two rabbits with AaBb alleles?%0D%0A%0D%0A a%0D%0A1/16%0D%0A b%0D%0A3/16%0D%0A c%0D%0A4/16%0D%0A d%0D%0A9/16
To solve this Dihybrid cross, we need to first determine all possible gamete combinations for each parent.
For the rabbit with AaBb alleles, the possible gametes are AB, Ab, aB, and ab.
Therefore, the possible combinations for the offspring are:
AB x AB, AB x Ab, AB x aB, AB x ab
Ab x AB, Ab x Ab, Ab x aB, Ab x ab
aB x AB, aB x Ab, aB x aB, aB x ab
ab x AB, ab x Ab, ab x aB, ab x ab
Next, we need to determine the phenotypes for each possible combination:
AB x AB: agouti (A_B_)
AB x Ab: agouti (A_B_)
AB x aB: albino (A_bb)
AB x ab: agouti (A_bb)
Ab x AB: agouti (A_B_)
Ab x Ab: agouti (A_B_)
Ab x aB: agouti (A_bb)
Ab x ab: agouti (A_bb)
aB x AB: agouti (aB_)
aB x Ab: agouti (aB_)
aB x aB: agouti (aBB)
aB x ab: agouti (aB_)
ab x AB: agouti (ab_)
ab x Ab: agouti (ab_)
ab x aB: agouti (ab_)
ab x ab: albino (ab_)
Out of the 16 possible combinations, 1 combination will result in albino offspring (A_bb).
Therefore, the probability of albinism in the offspring of a cross between two rabbits with AaBb alleles is 1/16 or option a.