Mutation rates:
a. are generally unimportant in evolution.
b. can be synonymous or non-synonymous.
c. can be affected by environmental factors.
d. are equal in all species—this is why we can accurately calibrate a molecular clock.
e. tend to be higher in E. coli than in Homo sapiens.
Ans: c. can be affected by environmental factors.
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Which of the following represents an example
of climate?
a. July 20, 1930 was the hottest day on record in Washington, DC b. April 14th, 1921 Silver Lake, Colorado received 1.7 meters of snow c. the rainfall in Seattle, Washington on July 4, 2010 was 2 centimeters d. the average summer temperature in Miami, Florida is 27 Celsius e. none of these are an example of climate
Which of the following terms does not apply to organisms in the Phylum Amoeboza?
a. chlorophyll. b. phagocytosis. c. pseudopodia. d. slime mold.
Unequal crossing over often results in the formation of duplicate copies of existing genes. At what phase of meiosis can unequal crossing over occur, and why does this happen?
What will be an ideal response?
One critical requirement for life to arise on Earth was time for which to occur?
a. The salinity of the oceans to stabilize b. The Earth's various climates to stabilize c. Molecules to accumulate and react with one another d. The atmospheric temperature to increase sufficiently e. The ozone layer to form, so that the level of ultraviolet radiation was reduced