If evolution has occurred:
a) the allele frequencies in a population have changed.
b) the mean value for a trait has increased or decreased.
c) the individuals in a population have had differential reproductive success.
d) one species has split into two distinct species.
e) None of the above is correct.
Ans: a) the allele frequencies in a population have changed.
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Which would be most likely to be fossilized?
A. a small worm with all soft body parts. B. a thick-shelled oyster that lives under water. C. a small herb growing at the top of a mountain. D. an elephant trapped in a tar pit. E. a thick-shelled oyster that lives under water and an elephant trapped in a tar pit.
Which of the following organisms are resistant to destruction by typical disinfection methods?
A. Endospores of Bacillus and Clostridium B. Pseudomonas C. Non-enveloped viruses D. Mycobacterium spp. E. All of the choices are correct.
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