An insect population that becomes resistant to a commonly used insecticide is an example of _____.  

A.  natural selection
B.  a founder effect
C.  disruptive selection
D.  gene flow
E.  genetic drift


A.  natural selection

Biology & Microbiology

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Which muscle group is composed of mainly slow-twitch (type I) fibers?

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What gland might be overactive if a patient is losing bone calcium?

A. testes B. ovaries C. parathyroid D. thyroid E. adrenal

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Which of these statements can be logically inferred from the amount of DNA shared by chimpanzees and humans?

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Transcribe and then translate the following DNA code: AATCGGTTCCATCGG

What will be an ideal response?

Biology & Microbiology