Shorthorn cattle may be red, white, or roan in color. the roan is an intermediate coloration due to a mixture of red and white hairs, and is the result of incomplete dominance. a breeder of shorthorn cattle has cows which are white, and a bull which is roan. what proportion of the calves produced in this herd will be white?

Half or 0.5

Explanation:

Let the alleles for the cattle color be R and r. So,

RR = Red

Rr = Roan (incomplete dominance)

rr = white

When the breeder mates white cow (rr) with roan bull (Rr) :

      R      r

r     Rr     rr

r     Rr     rr

Half or 0.5 of the progeny has rr genotype so 0.5 of the progeny will be white in color.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.