In dogs, genes A and B are required for scent.Individuals homozygous for either one or both of the nonfunctional recessive allel es are not able to smell.If a large number of matings were made between two double heterozygotes, what percentage of offspring would not be able to smell? Express your answer as a fraction (i.e. 1/10)
1 answer:
Answer:
6/16 dogs will not be able to smell.
Explanation:
Genes A and B are considered for scent smell.
Individuals homozygous for either one or both of the nonfunctional recessive alleles are not able to smell.
The final cross would be AaBb x AaBb which has outcome of;
Individual with homozygous nonfunctional recessive alleles (bold ones):
One nonfunctional recessive alleles: Aabb , aa BB, aa Bb, Aabb , aa Bb (5/16) Two nonfunctional recessive alleles: aabb (1/16) All nonfunctional recessive alleles: 6/16 dogs that could not smell scents
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