Four of the following will stimulate the production of males in water fleas. Which one is the exception?
A. Spring
B. Warm water
C. Salty water
D. High competition for resources
E. Crowding
Answer: A
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What will be an ideal response?
Monoallelic expression is associated with which of the following?
A. X-inactivation B. Genomic imprinting C. Maternal inheritance D. Extranuclear inheritance
Which best explains how Australia has distinctive organisms, such as marsupials, that cannot be found anywhere else
on Earth? a. Australia has an unusual climate that has triggered natural selection. b. There are fewer species of organisms in Australia than most continents. c. Australia experienced a significantly slower rate of evolutionary change. d. The predators of marsupials eliminated the populations in other locations. e. Australia was separated and isolated from other land masses for a long period of time.
According to the fossil record, the first modern humans appeared approximately:
a. 190 million years ago. b. 100,000 years ago. c. 1 million years ago. d. 6,000 years ago. e. 6 million years ago.