You Are Conducting a Genetic Screen Using Caenorhabditis Elegans Embryos

question 70

Multiple Choice

You are conducting a genetic screen using Caenorhabditis elegans embryos to isolate mutations affecting anaphase A. Therefore, you need to look for embryos in which

• A) the centromeres do not move toward the poles.
• B) the poles do not move apart.
• C) the spindle apparatus does not disassemble.
• D) sister chromatids fail to separate.

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Definitions:

Leptin

A chemical produced by the adipose cells that seems to signal that plenty of fat is stored and that no more fat is needed. This signal may diminish eating.

Adipose Cells

Cells specialized in storing fat, found in adipose tissue, and play a role in energy storage, insulation, and cushioning of the body.

Anterior Hypothalamus

A region of the brain located in the hypothalamus that plays a role in regulating temperature, sleep, and reproductive behavior.

Implanted Wires

Thin wires or electrodes surgically placed inside the body for various medical treatments or research purposes.