An assumption of twin studies is that
A) twins are more intelligent than singletons.
B) both twins of a pair have had similar experiences.
C) the twins are monozygotic.
D) he twins are dizygotic.
B) both twins of a pair have had similar experiences.
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Lysozyme is an antimicrobial enzyme found in tears and saliva.
a. true b. false
Caddisflies are insects that lay their eggs on the bottom of streams. The eggs mature into larvae, and eventually the larvae pupate, move to the surface of the stream, shed their pupal membranes, and emerge as winged adults. Caddisflies demonstrate
A) incomplete metamorphosis. B) complete metamorphosis. C) alteration of generations.
Darwin's observations of finches was a study of their distribution, making it one example of the _______ evidence he collected as he developed theories on evolution.
What will be an ideal response?
Which of the following is a possible phenotpic outcome resulting from a mutation?
A. Reduced fitness B. Enhanced fitness C. No effect on fitness D. All of the above E. None of the above