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
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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
Which of the following is the closest living
relative to a bird?
a. lizards b. alligators c. bats d. dinosaurs e. winged insects
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
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