One of the most common causes of intellectual disability in the United States is ____
a. congenital rubella syndrome
b. cocaine addiction
c. fetal alcohol syndrome
d. the use of thalidomide by pregnant women
e. the use of tetracycline by pregnant women
ANSWER: c
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Accelerated evolution has occurred in all of the following types of human genes except those for:
A. chemosensory perception. B. immune function. C. reproduction. D. transcription factors. E. brain development or size.
During this phase of the cell cycle sister chromatids separate and head towards opposite poles of the cell:
A. Metaphase B. Prometaphase C. Telophase D. Anaphase E. Prophase
Auxins primarily flow downward in shoots and roots and this transport is called:
A. bipolar B. polar C. nonpolar D. tripolar E. dipolar
A disease is caused by homozygosity for the g allele (G is the corresponding wild-type allele). However, the penetrance of the disease is 75%. Two individuals known to be heterozygotes have a child. What is the probability that the child exhibits the disease?
A) 1/4 B) 3/4 C) 1/8 D) 3/16 E) 9/16