In a One-Trait Testcross, the Phenotype That Disappears in the F₁

question 7

Multiple Choice

In a one-trait testcross, the phenotype that disappears in the F₁ generation of a homozygous dominant and homozygous recessive cross is the

• A) dominant trait.
• B) negative trait.
• C) recessive trait.
• D) heterozygote.
• E) homozygote.

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Definitions:

Vestibulocochlear

Relating to the eighth cranial nerve that is responsible for hearing and balance, connecting the inner ear to the brain.

Hypoglossal

Relating to the hypoglossal nerve, which controls muscles of the tongue and plays a key role in swallowing and speech.

Hearing Loss

A partial or total inability to hear sounds in one or both ears.

Vestibulocochlear Nerve

The eighth cranial nerve, responsible for hearing and balance.