CopyCat, the First Cloned Cat, Was Derived from an Ovarian

question 52

Multiple Choice

CopyCat, the first cloned cat, was derived from an ovarian cell from a female calico cat. But CopyCat was not an exact copy, as she herself was not calico. This result implies that:

• A)one of the X chromosomes had been lost from the donor nucleus.
• B)X-chromosome inactivation did not occur in CopyCat.
• C)the inactivated X chromosome in the donor nucleus remained inactivated.
• D)ovarian cells do not express coat-color genes.

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Definitions:

Withdrawal

The group of symptoms that occur upon the abrupt discontinuation or decrease in intake of medications or recreational drugs.

Depressant

A class of drugs that reduce the functioning of the nervous system and lead to decreased arousal or stimulation.

Stimulant

A substance that raises levels of physiological or nervous activity in the body, often leading to increased alertness or energy.

Neurotransmitters

Neurotransmitters are chemical messengers that transmit signals across a synapse from one neuron to another, influencing mental processes and behavior.