Question

make a cross with 2 roan cattle. co - dominance w = white r = red rw = roan be sure to note the answers so that you are able to answer the analysis questions on the following

Explanation:

Step1: Identify parent genotypes

Roan cattle have genotype RW, so parents are RW x RW.

Step2: Set up Punnett - square

Place the alleles of one parent on the top and the other on the side.

	R	W
W	RW	WW

Step3: Determine genotypes and phenotypes

Genotypes: 1 RR : 2 RW : 1 WW. Phenotypes: 1 red : 2 roan : 1 white.

Answer:

Genotypic ratio: 1 RR : 2 RW : 1 WW; Phenotypic ratio: 1 red : 2 roan : 1 white