What is the probability of producing a roan (red and white) cow when a white cow is crossed with a red cow? Cross: RR x WW

A cross between a roan bull (Ww) and a white cow (ww) produces roan and white phenotypes in a 1:1 ratio.

Explanation:

Two alleles are influencing the color of the hair of the cow-W red and w white.

These alleles show that a hybrid Ww has red hair. The genotype of the bull is Ww, WW is red and ww is white. So, mixing the red and white cows is 1:1.

answer: c. two haploid cells

explanation:

the fossil record provides evidence of a common ancestor to many species.