Question

when cattle with solid white coats (W) are mated to cattle with solid red coats (R) the offsping are roan (WR) meaning they have coats containing both white and red hairs. the roan coat is an example of condominance. A farmer who makes two roan cattle. what is the chance that thier offspring will also be roan?

Answer 1

There are 50% of probabilities of getting roan cattle, WR

Step-by-step explanation:

Available data:

• W is the Allele for solid white coats

• R is the allele for solid red coats (R)

• WR expresses roan, coats containing both white and red hairs.

• The roan coat is an example of condominance

1st Cross: Between cattle with solid white coats and cattle with solid red coats

Parental) WW x RR

Gametes) W W R R

F1) 100% WR

2nd Cross: Between two roan cattle

Parental) WR x WR

Gametes) W R W R

Punnet Square) W R

W WW WR

R WR RR

F2) Progeny genotype: 1/4 solid white-coated cattle, WW (25%)

2/4=1/2 roan cattle, WR (50%)

1/4 solid red-coated cattle, RR (25%)

There are 50% of probabilities of getting roan cattle, WR