The skin tans in response to sunlight because of increased________

A) keratin B) collagen C) sebum D) melanin

D

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The AAIDD advocates use of the term ________ instead of mental retardation

A) developmental disability B) mental disability C) intellectual disability D) neonatal onset disability

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The genetic makeup of an individual for a particular trait is known as:

A) homozygous B) genotype C) autosome D) phenotype

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