In cattle, the polled (hornless) condition (H) is dominant over horned (h) phenotype. A particular polled bull is bred to three cows. Cow A, which is horned, produces a horned calf; a polled cow B produces a horned calf; and horned cow C produces a polled calf. What are the genotypes of the bull and the three cows, and what phenotypic ratios do you expect in the offspring of these three matings

A)  

Hh *  hh

Hh, Hh, hh, hh

Out of four two calves are horned. Thus ratio of horned calves is

B)

Hh * Hh

HH, Hh, Hh, hh

Out of four one calf is horned. Thus ratio of horned calf is

C)

Hh * hh

Hh, Hh,hh, hh

Out of four two  are polled . Thus ratio of polled calves is

Explanation:

Allele for dominant polled /hornless cattle is H

Allele for recessive horned cattle is h

A) Polled bull X horned Cow A ----> horned calf

This signifies that the polled bull is heterozygous with genotype Hh

Hh *  hh

Hh, Hh, hh, hh

Out of four two calves are horned. Thus ratio of horned calves is

B) Polled bull X polled Cow B ----> horned calf

Both Bull ad cow are heterozygous with genotype Hh

Hh * Hh

HH, Hh, Hh, hh

Out of four one calf is horned. Thus ratio of horned calf is

C) Polled bull X horned Cow C  ----> polled calf

Hh * hh

Hh, Hh,hh, hh

Out of four two  are polled . Thus ratio of polled calves is

the sunflower because each experiment got the same results

hope this !

-payshence

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.