Horses in Horses, Black Coat Color Is Influenced by the Dominant

question 148

Short Answer

Horses In horses, black coat color is influenced by the dominant allele ( B ) and chestnut coat color by the recessive allele ( b ). Trotting gait is due to a dominant gene ( T ), pacing gait to the recessive allele ( t ). Use this information to answer the following question(s). In the horses example above, if a homozygous black trotter is crossed to a chestnut pacer,
(a) what will be the appearance of the F ₁ and F ₂ generations?
(b) which phenotype will be the most common?
(c) which genotype will be the most common?
(d) which of the potential offspring will be certain to breed true?

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Definitions:

Medulla Oblongata

The medulla oblongata is a part of the brainstem that plays a crucial role in autonomic functions, including respiration, heart rate, and blood pressure regulation.

Posterior Horn

A region in the spinal cord's grey matter involved in sensory processing, receiving and relaying sensory information from the body to the brain.

Anterior Horn

A section of the spinal cord gray matter that plays a critical role in motor function.