During the period of the zygote, the __________ becomes the new organism, and the __________ becomes the structures that provide protective covering and nourishment
A) embryonic disk; trophoblast
B) trophoblast; amnion
C) yolk sac; chorion
D) embryonic disc; villi
A
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Gender, a person's sense of being female or male, is first established when children are __________.
A. in adolescence B. around 8 years old C. infants D. preschool age
Which of the following facts has been viewed as good evidence that language is an adaptation?
a. Children make mistakes when learning the rules of language. b. There are brain regions specialized for language processing. c. Chimpanzees can be taught to use some manual signs to communicate. d. The human ear is poorly designed for processing speech.
If the photopigment levels in your eyes are extremely high, it is most likely a result of ____.?
a. ?not eating enough carrots b. ?being exposed to bright lights for a long time c. ?being in a dark room for a long time d. ?normal age-associated changes
The concordance rate for bipolar disorder among identical twins has been found to be as high as _________ percent
a. 10-20 b. 25-40 c. 40-70 d. 70-85