Which of the following best explains this phenomenon?
There is a population of frogs living in a pond, 25 are green, 25 are brown, 25 are yellow with green spots and 25 are all yellow. A drought occurred and 75% of the frogs died. The remaining frogs were green and brown, after 25 generations the frogs still were green and brown, yellow frogs never appeared in the population again.
A. Sexual selection.
B. Balancing selection.
C. Bottleneck effect.
D. Heterozygote advantage.
E. Founder effect.
C. Bottleneck effect.
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I) protein II) fat III) nucleic acids IV) carbohydrates A) I and III B) II and IV C) I, II, and IV D) II, III, and IV E) I, II, III, and IV
Which of the following disease symptoms would you expect to see in legumes grown in sterile soil?
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Media containing some ingredients of unknown chemical composition are called ________ media.
A. synthetic B. defined C. complex D. undefined
How do bacteria reproduce?