Cells are always producing proteins from every gene they possess.
a. true
b. false
Ans: b. false
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If the age of the Earth is 4.6 billion years old, for what percentage of this time is Earth thought to have been anaerobic?
A. 0.1% B. 27% C. 44% D. 68% E. 99.3
Cleft palate is ____
a. controlled only by genetics b. a continuously distributed trait c. controlled by a single gene pair d. only transmitted from father to son e. explained by the threshold model of complex traits
The enzyme nitrogenase is most directly involved in the process called
a. nitrification. b. ammonification. c. nitrogen cycling. d. nitrogen fixation. e. nitrogen assimilation.
In the Hardy-Weinberg formula, what does 2pq represent?
A) frequency of the dominant allele B) frequency of heterozygotes C) frequency of the recessive allele D) frequency of the homozygous dominants