When a Researcher Transplanted the Nucleus of an Intestinal Cell

question 62

Multiple Choice

When a researcher transplanted the nucleus of an intestinal cell from a tadpole into an egg cell whose nucleus had been destroyed, the egg developed into a normal frog. This illustrates that

• A) scientists can clone a human by putting one of his or her nuclei into an egg cell.
• B) each cell of an organism has all the genes needed for development.
• C) a nucleus that is removed from its normal location is influenced by adjoining cells.
• D) the homeobox genes in a transplanted nucleus undergo mutation.
• E) genes are gained during the process of differentiation.

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Definitions:

Pineal Gland

A small endocrine gland in the vertebrate brain that produces and secretes the hormone melatonin, regulating sleep patterns.

Adrenal Gland

A pair of endocrine glands that sit above the kidneys and produce hormones such as adrenaline and cortisol, which help control stress and other bodily functions.

Peripheral Nervous System

The part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.

Central Nervous System

The complex of nerve tissues that controls the activities of the body, comprising the brain and spinal cord.