About an hour or so after the sperm enters the ovum, the two gametes suddenly fuse, becoming a single cell organism called a(n) __________
a) chromosome
b) ovum
c) zygote
d) gene
Answer: c
Psychology
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A critical period in development occurs in the embryonic stage of prenatal development.
a. true b. false
Psychology
Mrs. Park always caressed her daughter's forehead whenever she nursed her. Soon her daughter made sucking noises whenever anyone stroked her forehead. This illustrates
a. instrumental conditioning. c. operant conditioning. b. classical conditioning. d. reflex conditioning.
Psychology