Which of the following is NOT an example of
gene flow?
a. several chimpanzees migrate from their
colony to join another one close by
b. spores from a mushroom are carried by the
wind thousands of miles
c. wild cherries are eaten by a migrating bird
and the seeds released many miles away
d. a small group of humans left Africa about
100,000 years ago and established new
colonies in the middle East and Europe
e. all of these are examples of gene flow
D
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A relationship between two organisms in which both members benefit is said to be
(a) parasitic. (b) saprotrophic. (c) mutualistic. (d) heterotrophic.
Water potential is measured in units of pressure called _________.
A. Megapascals B. Milivolts C. Osmotic units D. Molarity E. Joules
Organisms demonstrated by the technique shown in Image A belong to the group known as:
a) Spirochetes b) Bacilli c) Mycobacteria d) Fungi
The idea that most of the genetic variation found in populations is not subject to natural selection is the basis of
A. the principle of parsimony B. the maximum likelihood approach C. systematics D. the neutral theory of evolution E. cladistics