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
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Which muscle group is composed of mainly slow-twitch (type I) fibers?
A. Deltoid muscle of the shoulder B. Rectus muscles that move the eye C. Erector spinae muscles of the back D. Small muscles of the hand
What gland might be overactive if a patient is losing bone calcium?
A. testes B. ovaries C. parathyroid D. thyroid E. adrenal
Which of these statements can be logically inferred from the amount of DNA shared by chimpanzees and humans?
A) Humans and chimpanzees share a relatively recent common ancestor. B) Humans evolved from chimpanzees. C) Humans are unique and different from all other life forms. D) Humans are a more complex life form than chimpanzees.
Transcribe and then translate the following DNA code: AATCGGTTCCATCGG
What will be an ideal response?