Question

Assume that a cross is made between AaBb and aabb plants and that the offspring occur in the following

numbers: 106 AaBb, 48 Aabb, 52 aaBb, 94 aabb. These results are consistent with which scenario described?
A) It is impossible to tell.
B) There is a very high coefficient of coincidence.
C) The genes are unlinked.
D) In the AaBb parent, the dominant alleles are on one homolog and the recessive alleles are on the other.
E) In the AaBb parent, each homolog has one dominant allele and one recessive allele.

Answer 1

The results of the cross AaBb x aabb indicate that the genes are unlinked.

Step-by-step explanation:

The results of the cross AaBb x aabb can help determine if the genes are linked or unlinked. In this case, the offspring numbers are as follows: 106 AaBb, 48 Aabb, 52 aaBb, and 94 aabb. If the genes were unlinked, we would expect equal frequency of the four possible genotypes: AaBb, Aabb, aaBb, and aabb. However, in this scenario, the numbers are not equal, which suggests that the genes are linked.

Therefore, the correct answer is C) The genes are unlinked.