In cattle, coat color is controlled by a sex-influenced gene that controls spot coloration.  Mahogany and white spots are recessive in bulls, where as red-and-white spots is dominant in cows .A mahogany and white spotted cow is crossed with a red-and white spotted bull.  The cow gives birth to a single calf with red-and-white spots.  a. What are the genotypes of the cow, the bull, and the calf? Use H for dominant and h for recessive. Cow     Bull     Calf     b. The red calf is eventually crossed with a heterozygous male.  What is the probability that the first  3 calves will be mahogany with white spots?   c. What is the probability that the cross in “b” will result in the first 3 calves being males with mahogany and white spots and the 4th calf a female with red and white spots?

Human Anatomy & Physiology (11th Edition)
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In cattle, coat color is controlled by a sex-influenced gene that controls spot coloration.  Mahogany and white spots are recessive in bulls, where as red-and-white spots is dominant in cows .A mahogany and white spotted cow is crossed with a red-and white spotted bull.  The cow gives birth to a single calf with red-and-white spots. 

a. What are the genotypes of the cow, the bull, and the calf? Use H for dominant and h for recessive.

Cow

 

 

Bull

 

 

Calf

 

 

b. The red calf is eventually crossed with a heterozygous male.  What is the probability that the first  3 calves will be mahogany with white spots?

 

c. What is the probability that the cross in “b” will result in the first 3 calves being males with mahogany and white spots and the 4th calf a female with red and white spots?

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