Which group describes a population?
a. members of a population are all genetically identical
b. members of a population live together and interbreed
c. a population may include both predators and prey
d. members of a population spend much of their time living apart
e. members of a population can live in two geographic areas
ANSWER: b
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What will be an ideal response?
Prokaryotes reproducing by binary fission can increase genetic variation by (select all correct choices):
A. mutation. B. DNA transfer during conjugation. C. obtaining DNA from the environment. D. obtaining DNA through viral infection. E. exchange of genetic material between homologous chromosomes.
The activation of the SOS system in a bacterium infected with a prophage results in
A. destruction of the viral genes. B. complete lysis of the bacterial culture. C. mutation of the DNA. D. destruction of the viral repressor through host protease activity. E. complete lysis of the bacterial culture AND destruction of the viral repressor through host protease activity.
Various modifications in leaves can make plants better adapted to their habitats. Which of the following is not an evolutionary modification of leaves?
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