In Fruit Flies, Bar Eye Is Inherited by a Dominant

question 36

Multiple Choice

In fruit flies, bar eye is inherited by a dominant X-linked allele (B for bar) . If a heterozygous bar-eyed female is mated to a non-bar-eyed male, what will be the expected ratio of phenotype given four offspring?

• A) two bar-eyed females, two bar-eyed males
• B) one bar-eyed and one non-bar-eyed female, one bar-eyed and one non-bar-eyed male
• C) three bar-eyed females and one non-bar-eyed male
• D) bar-eyed females only
• E) non-bar-eyed males only

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Definitions:

Ear Pain

Discomfort or pain within the ear, which can be caused by infections (like otitis media), injuries, or conditions affecting the ear canal or eardrum.

Discharge

The release of fluid from a part of the body, which can be normal or a sign of infection or other medical conditions.

Voice Test

A method of assessing the quality, pitch, and health of the vocal cords and voice box by having an individual speak or sing.

Whisper

A soft or hushed tone of voice, typically used to convey information privately or without producing much sound.