Question

A pale person goes out into the sun, and later their skin darkens (tans). This is...

A pale person goes out into the sun, and later their skin darkens (tans). This is due to

Group of answer choices

Altered gene presence

Altered gene expression

Phenotype becoming dominant

Genotype becoming dominant

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Answer #1

A person that goes out into sun, after which the skin gets darkened (tanned). This phenomenon occurs due to altered gene expression. It is because when a person is lying indoors, there is no tanning happening; therefore there is no production of melanin occuring. But out in sun, to prevent the occurence of skin cancer, pigment known as melanin is released which makes the skin darker. This is known as altered gene of expression.

Hence, the correct option is (b)

About the incorrect options-

(a), (c) and (d) - There is no such thing like this. These mechanisms do not exist.

Hope it helps

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