Question

In horse, black is dependent on a dominant gene and, chestnut colour is by a recessive gene. Trotting gait is dominant over pacing. What kind of offsprings will you get if you cross a homozygous black trotting.

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Answer 1

Answer:

Explanation:

If you cross a homozygous black trotting horse (BBTT) with another horse, the possible offspring genotypes and phenotypes can be determined using a Punnett square:

       BT BT

BB BBT BBT

BB BBT BBT

Therefore, all of the offspring will be heterozygous black trotting horses (BBT), as that is the only possible genotype from this cross. All offspring will have a black coat and will trot.

The genotype of the offspring for the chestnut coat color gene is not determined in this cross, as the homozygous black trotting horse does not carry the recessive gene for chestnut color. Therefore, it is not possible for the offspring of this cross to express chestnut coat colour.