In most male mammals, the testes are present
a. within the abdomen.
b. close to the body to maintain body temperature.
c. from puberty on.
d. in the scrotum.
e. for part of their lives.
D
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Which one of the following is NOT one of the general classes of macromolecules that are necessary for cellular function?
A. Nucleic acids B. Proteins C. Ions D. Carbohydrates E. Lipids
How many genes are generally found for every million bases of prokaryotic DNA?
A. 10 B. 100 C. 1,000 D. 10,000 E. 100,000
Mitochondrial DNA profiling is useful in developing DNA profiles from samples that are in less than ideal condition. What is a major limitation of using mitochondrial DNA profiling?
A) It is not possible to differentiate between maternal relatives. B) It is useful in identifying victims of disasters when relatives are available for reference. C) It is possible to differentiate between maternal relatives. D) It is present in high copy number.
Which of the following is NOT related to genetic drift?
A. Bottleneck effect B. Neutral variation C. Non-Darwinian evolution D. Founder effect E. Sexual selection