You find a cell of a type you have never seen before. The cell has both a nucleus and a cell wall. Therefore, you conclude that it is likely to be a(n) ________ cell
A) prokaryotic
B) animal
C) bacterial
D) plant
D
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If DNA repair mechanisms were perfect, which of the following would most likely result?
A. We would live forever. B. Evolution as we know it would stop because mutations are the only agent that gives us new genetic variation. C. The rate of evolutionary change would dramatically increase. D. Humans would stop aging, as aging is a collection of DNA mutations. E. All of the answer options are correct.
This count of individuals refers to the __________
a. carrying capacity b. niche c. species diversity d. resource partitioning
Development of cities and towns can have all of the
following effects EXCEPT a. to produce pollutants that kill endangered species. b. to bring exotic species of plants to an area that take over and kill native species. c. pet cats can kill songbirds. d. to fragment breeding areas and interfere with normal migration patterns. e. all of these are effects of development.
The relative fitness values of three genotypes are: wAA = 1.0, wAa = 1.0, and waa = 0.7. What is the predicted equilibrium allele frequency if the rate of mutation of A to a is 2 x 10^-5?
a. q hat = 0.022 and p hat = 0.978 b. q hat = 0.008 and p hat = 0.992 c. q hat = 0.005 and p hat = 0.995 d. q hat = 0.011 and p hat = 0.989