Question
Regulatory genes
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Answer
Genes that control transcription of other genes rather than coding structural proteins. MCAT clue: expression differences can drive behavior.
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Question
Gene-environment interaction
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Answer
A genotype's effect on phenotype depends on the environment. MCAT clue: outcome appears only under specific exposure.
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Question
Autonomic nervous system (ANS)
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Answer
PNS division controlling involuntary smooth muscle, cardiac muscle, and glands.
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Question
High heritability vs environmental importance
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Answer
High heritability does not mean environment is unimportant or the trait is fixed; estimates depend on population and conditions.
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