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:

Membrane Potential

The voltage difference across a cell's plasma membrane, resulting from the differential distribution of ions, important for various cellular activities including the transmission of nerve impulses.

Nodes

Points on a plant stem where leaves or branches originate; also, junction points in network or circuit.

Myelinated Axon

An axon that is covered with myelin, a fatty substance which increases the speed at which electrical impulses propagate along the nerve fiber.

Action Potentials

Electrical impulses that travel along the membrane of a neuron or muscle cell, enabling communication and response to stimuli.