What source of genetic variation arises from a change in the DNA sequence of sex cells?
a. Mutation
b. Genetic recombination
c. Genetic diversity
d. Natural selection
Ans: a. Mutation
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The eyes of nocturnal predators are likely to have:
A. a higher concentration of rods than cones B. a higher concentration of cones than rods C. more bipolar cells than those animals that hunt during the day D. more ganglion cells than those animals that hunt during the day
Which of the following regions of the human brain is critically important for monitoring and controlling movements?
A. medulla oblongata B. cerebellum C. hypothalamus D. basal nuclei E. cerebral cortex
A type of horizontal gene transfer in prokaryotes, in which a cell receives DNA from another cell through a sex pilus, is
A. replication. B. fixation. C. transduction. D. transformation. E. conjugation.
Based on the figure above, which group of organisms is most closely related to members of the Kingdom Animalia?
A) Protista B) Fungi C) Plantae D) Bacteria E) Archaea