Twin studies have been used to assess the relative importance of "nature" versus "nurture" in determining variation among individuals for complex traits. Which of the following statements is not correct?
A. In principle, identical twins differ only
because of environment.
B. In principle, fraternal twins differ because
of genotype and environment.
C. Twin studies show that autism and clinical
depression are not significantly influenced by
genotype.
D. The extent to which fraternal twins differ
more from each other than identical twins
differ from each other measures the effects of
genotype.
E. Identical twins reared apart compensates
for environmental influences that may be
stronger for identical twins compared to
fraternal twins.
C
You might also like to view...
Which of the following statements about digestion is true?
A. Digestion can be both mechanical and chemical, and it occurs both in the mouth and in the stomach. B. Mechanical digestion occurs only in the stomach; chemical digestion occurs only in the mouth. C. Digestion is the same thing as ingestion. D. Digestion occurs only in the stomach.
N-terminal sequences of four different bacterial proteins are listed below. Which of these proteins would have the shortest half-life?
A. Ala-Val-Ile---- B. Ser-Glu-Gly---- C. Lys-Gln-Pro---- D. Thr-Gly-Ala----
Which of the following are lines of evidence that support the theory of evolution by natural selection?
A. The comparison of DNA sequences in different organisms B. The comparison of body structures in modern organisms C. The study of the geographic distribution of species on Earth D. All of the above are lines of evidence that support the theory of evolution
Which of the following are found on either side of a plant stoma?
a. guard cells b. trichomes c. leaves d. root hairs