The female ovum carries
a. only X chromosomes.
b. only Y chromosomes.
c. X chromosomes in half of the ova and Y chromosomes in the other half.
d. both an X and a Y chromosome in each ovum.
ANSWER: a
Psychology
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Of the 23 pairs of chromosomes, 22 pairs look alike and possess genetic information concerning the same traits. These are
a. sex chromosomes. b. identical chromosomes. c. autosomes. d. alleles
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Your hand draws back from pain, bright light causes the pupil of your eye to narrow, and a puff of air directed at your eye will make you blink. All of these are examples of
a. reflexes. b. operants. c. neurological expectancies. d. cognitive maps.
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