During ____, microtubules disassemble, pulling the chromatids to the ends of the spindle
a. prophase
b. interphase
c. anaphase
d. metaphase
e. telophase
ANSWER: c
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Thigmotropism is a growth response to
a. light. b. day length. c. contact with a solid object. d. circadian rhythms. e. gravity.
Fungi are genetically most closely related to
a. ferns. b. flowering plants. c. algae. d. animals. e. none of these.
A population with zero growth is indicated by
a. A. b. B. c. C. d. D. e. none of these
About 12,000 years ago, a mass extinction event occurred and 75% of the world's large mammal species were eliminated. While a small number of cheetahs managed to survive and restore the world's population of cheetahs, this event caused an extreme reduction of the cheetah's genetic diversity. Based on the principles of natural selection, which of the following is a consequence of their reduced genetic diversity?
A. Cheetahs within the same population do not vary in their reproductive success. B. Cheetahs have never fully adapted to the current environment. C. Cheetahs are unable to effectively compete with each other for resources. D. Cheetahs have very little heritable variation, which will make it difficult for them to adapt as the environment changes.