Question

codominance
the roan coat color in cattle is an example of codominance. this means both alleles are clearly expressed.
if a white cow is crossed with a red cow, the offspring will have a coat made of both red and white hairs.

1. if two roan cattle were crossed, what percent of the offspring would you expect to have a roan coat?

type here.

Explanation:

Step1: Identify parent genotypes

Roan cattle have genotype $C^R C^W$, so both parents are $C^R C^W$.

Step2: Set up Punnett Square

$$\begin{array}{c|cc} & C^R & C^W \\ \hline C^R & C^R C^R & C^R C^W \\ C^W & C^R C^W & C^W C^W \\ \end{array}$$

Step3: Count roan genotype outcomes

Roan genotype is $C^R C^W$, which appears 2 times out of 4 total squares.

Step4: Calculate percentage

$\text{Percentage} = \frac{2}{4} \times 100\% = 50\%$

Answer:

50%