How much mercury can the average human

safely consume per day?
a. 1 microgram.
b. 3 micrograms.
c. 7 micrograms.
d. 10 micrograms.
e. 100 micrograms


C

Biology & Microbiology

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Sister chromatids ______

a. are separated during anaphase I b. have different alleles for the same genes c. are replicated before meiosis I and II d. are replicated before meiosis II e. have identical DNA sequences

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Which of the following is the closest living

relative to a bird?

a. lizards b. alligators c. bats d. dinosaurs e. winged insects

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Because whales breathe via lungs, have a little hair when born, and nurse their young, these

__________ characters allow us to classify them as mammals. a. plesiomorphic b. homoplastic c. cladistic d. polyphyletic e. derived

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Which region displays an example of the founder effect amongst its population?

a. China b. Iceland c. Central Africa d. the United States e. the United Kingdom

Biology & Microbiology