Which Statement About Genes Is True

question 40

Multiple Choice

Which statement about genes is true?

• A) Genes that are turned off by regulator genes remain off for the remainder of the person's life.
• B) Regulator genes function without input from the environment.
• C) Genes belong to extensive networks of genes and do not function in isolation.
• D) All of the statements are true.

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Definitions:

Thyroid Hormone

Hormones produced by the thyroid gland, including thyroxine (T4) and triiodothyronine (T3), that regulate the body's metabolism.

Specific Tissues

Distinct types of material of which animals or plants are made, consisting of specialized cells and their products.

Secretion

The process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion.

Epinephrine

A hormone and neurotransmitter also known as adrenaline; involved in regulating heart rate, blood vessel and air passage diameters.