In Drosophila,a Gynandromorph,which Is Composed of Equal Parts of Male

question 40

Multiple Choice

In Drosophila,a gynandromorph,which is composed of equal parts of male and female tissue,results from

• A) an XX female losing one X chromosome during the first mitotic division after fertilization.
• B) an egg carrying an X chromosome fertilized by a Y-carrying sperm.
• C) a normal egg fertilized by both an X-carrying sperm and a Y-carrying sperm.
• D) the fusion of a female embryo with a male embryo.
• E) the fusion of a female egg by an XX sperm.

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Definitions:

Membranous Labyrinth

A network of fluid-filled passages and sacs within the inner ear, involved in hearing and balance.

External Acoustic Meatus

The canal leading from the outer ear to the eardrum, facilitating the conduction of sound waves.

Bony Labyrinth

The rigid, bone-encased passageways in the inner ear that are filled with fluid and contain structures essential for hearing and balance.

Tympanic Cavity

The air-filled space in the middle ear that contains the auditory ossicles, crucial for the transmission of sound vibrations.