Question

why do all offspring have the same fur color?
a) the genes were not mixed well enough
b) it was a coincidence
c) they have the same alleles for the relevant genes
d) they inherited different sets of genes from their parents

Explanation:

Alleles are alternative forms of a gene. When offspring have the same alleles for genes related to fur - color, they will have the same fur - color. Genes not mixing well is not a typical reason for identical fur - color. A coincidence is unlikely for all offspring. Inheriting different sets of genes would likely lead to different fur - colors.

Answer:

c) They have the same alleles for the relevant genes