For People, Red Hair Is a Recessive Trait

question 137

Multiple Choice

For people, red hair is a recessive trait. In order for a child to have red hair, what must be true of the parents?

• A)One parent must have red hair.
• B)Both parents must have red hair.
• C)One parent must have a gene for red hair.
• D)Both parents must have a gene for red hair.

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Definitions:

Sympathetic Neurons

Neurons that are part of the sympathetic nervous system, responsible for the body's 'fight or flight' response.

Neural

Pertaining to the nerves or the nervous system.

Autocrine

Relating to or denoting a mode of hormone action where a hormone affects the same cell type that produced it.

Nuclear Receptor

A class of proteins within cells that, upon binding with a ligand, can act as transcription factors to regulate gene expression.