What is TRUE about genes?
A.
They are outside the nucleus of a cell.
B.
They are the same for humans and chimps.
C.
They are made up of chromosomes.
D.
They determine a person’s hair color.

The type and amount of melanin in hair is determined by many genes, although little is known about most of them. The best-studied hair-color gene in humans is called MC1R. This gene provides instructions for making a protein called the melanocortin 1 receptor, which is involved in the pathway that produces melanin.

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What is TRUE about genes? A. They are outside the nucleus of a cell. B. They are the same for humans and chimps. C. They are made up of chromosomes. D. They determine a person’s hair color.

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What is TRUE about genes?
A.
They are outside the nucleus of a cell.
B.
They are the same for humans and chimps.
C.
They are made up of chromosomes.
D.
They determine a person’s hair color.