Which of the following is true about both sperm and egg production?
A) Millions of mature gametes are produced daily.
B) Initiation of meiosis is continuous after puberty.
C) All resulting gametes are haploid.
D) All cells that result from meiosis function as gametes.
E) All resulting gametes are the same size.
Answer: C
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In general, in a sample of n individuals, the frequency of an allele is
A. the number of occurrences of the allele. B. the number of occurrences of the allele divided by n. C. the number of occurrences of the allele divided by twice the number of individuals in the sample (2n). D. twice the number of occurrences of the allele divided by n.
The molecule that is polar and acts like a base is
A. R-NH2 B. R-CO-R C. R-OH D. R-PO4 E. R-SH
Twins from two individual zygotes (dizygotic twins)
A) are as related genetically as monozygotic twins. B) share no genetic similarities. C) are 100% genetically identical. D) are as related genetically as non-twin siblings.
Which of the following activities is likely to deplete an aquifer fastest?
A) desert trees B) deep-well drilling for farms C) using chlorofluorocarbons D) employing molybdenum-based fertilizers