A behavior that has a genetic basis is subject to evolution by __________. Fill in the blank(s) with the appropriate word(s)
ANSWER: natural selection
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What is the effect of DNA methylation?
A. It increases transcription. B. It inhibits transcription. C. It increases crossover events. D. It decreases crossover events. E. It promotes post-translational modification of proteins.
The major histocompatibility complex directs the production of proteins called
A. class IV. B. class II. C. class I. D. both class I and class II. E. both class I and class IV.
Why is the destruction of helper T cells caused by HIV infection so crippling to adaptive immunity? What will be an ideal response?
Type I diabetes is characterized by ___________.
A. high blood insulin levels B. low blood sugar levels C. destruction of insulin-secreting beta cells D. low glucagon levels E. higher than normal uptake of glucose from the blood