A Fly (Drosophila) with an XY Genotype Has a Mutation

question 35

Multiple Choice

A fly (Drosophila) with an XY genotype has a mutation in its sex-lethal (Sxl) gene that renders its protein product nonfunctional. Which of the following describes the sex of this fly?

• A) male
• B) female
• C) intersex
• D) male, but it will be sterile
• E) female, but it will be sterile

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Definitions:

Wild Type

The most common genotype or phenotype observed in a natural population, considered the standard or reference to which genetic mutations are compared.

Beak Size

A phenotypic trait representing the dimensions of a bird's beak, which can vary greatly among species and is influenced by genetics and environmental factors.

Offspring

The biological progeny or young produced by breeding or reproduction between organisms.

Drought

An extended time during which an area experiences a significant deficit in its water supply.