Defective color vision is more common among males than females because
a. males have fewer cones than females.
b. genes for photopigments are carried on the Y chromosome.
c. as a result of higher estrogen levels, females produce more rhodopsin than males.
d. genes for photopigments are carried on the X chromosome.
e. as a result of lower estrogen levels, males produce more rhodopsin than females.
d. genes for photopigments are carried on the X chromosome.
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In a journal article, the ____________________ presents an overview of the problem under investigation and quickly reviews previous research in the same area
Fill in the blank(s) with correct word
Which of the following examples represents the most remarkable demonstration of teaching animals to communicate?
a. Kanzi's mother, a chimp who learned to communicate through the pushing of geometric shapes on akeyboard b. Washoe the chimp who learned to combine signs into simple phrases c. Sarah the chimp who learned to communicate through placement of plastic chips d. A chimp named Nim Chimpsky learned to "sign" via operant conditioning e. Kanzi the chimp who learned to communicate through observation and imitation of his mother