Answer:
The percentage of the progeny that are likely to be Agouti = 37.5%
Explanation:
From the given information;
An agouti mouse that is heterozygous at the albino ( A) and agouti ( B) loci ( AaBb) is mated to an albino mouse that is heterozygous at the agouti locus ( aaBb).
Agouti mouse = AaBb
If the Agouti mouse self cross; gamete needed for the crossing will be:
AB, Ab , aB, ab
Albino mouse = aaBb
If the Albino mouse self cross; gamete needed for the crossing will be:
aB, ab, aB, ab
The crossing can now be represented in a punnet square as shown below:
AB Ab aB ab
aB AaBB AaBb aaBB aaBb
ab AaBb Aabb aaBb aabb
aB AaBB AaBb aaBB aaBb
ab AaBb Aabb aaBb aabb
The objective if this question is to determine the percentage of the progeny that are likely to be agouti
Let's recall that for a progeny to be agouti ; There is need for the genotype of such agouti mouse to be dominant for both traits or heterozygous for both traits.
Thus; we have;
AaBB , AaBb , AaBb, AaBB, AaBb, AaBb = 6/16
The percentage of the progeny that are likely to be Agouti = 0.375
= 37.5%
