Color blindness is a sex-linked trait. As such, if a child is color blind, we can be assured that the child's genotype includes:
a. a recessive gene on the X chromosome inherited from his mother
b. a dominant gene on the X chromosome inherited from his mother
c. a recessive gene on the Y chromosome inherited from his father
d. a dominant gene on the X chromosome inherited from his father
a
Psychology
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Elevated mood, psychomotor agitation, and flight of ideas are all characteristic of
a) mania. b) dysthymia. c) schizophrenia. d) unipolar mood disorder.
Psychology
The state of Vermont tried to anticipate the degree to which middle- and high-school students contemplated suicide. The state collected data from students in 1993, 1995, and 1997. This approach reflects
a. a cohort study. b. a trend study. c. a cross-sectional study. d. a retrospective study.
Psychology