If the fetus has the sex chromosomes XY, its genotype is _____
a. female
b. male
c. undetermined
d. dimorphic
Answer: B
Psychology
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A gamete is also referred to as a(n) ____
a. ovary c. gonad b. zygote d. germ cell
Psychology
Action potentials in muscle fibers
A. do not occur. B. spread out in two directions on either side of a receptor site. C. travel in only one direction, from one end of a muscle fiber to the other. D. lead to multiple twitches in that fiber.
Psychology
Between-class ability grouping, or tracking, is particularly common in
A) high school. B) junior high school. C) elementary school. D) middle school.
Psychology
Ethnocentrism can be reduced by:
a. interdependence in reaching mutual goals. b. an us-them mentality. c. competition. d. acculturation and accommodation.
Psychology