Compare and contrast the homology that occurs in the forelimbs of mammals. What will be an ideal response?
Concepts to Consider: Definition of homology; specific bones of the forearm; differences in
use such as grasping and lifting, swimming, and flight; a possible statement on the class of
animals--such as Class Mammalia if humans, cats, whales, and bats are used as examples.
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Relative to enzymes in mesophilic microorganisms, which of the following is NOT characteristic of enzymes in psychrophiles?
A) decreased alpha helices B) decreased beta sheets C) less hydrogen bonds D) less ionic bonds
As elevation increases
a. O2 availability increases. b. O2 availability decreases. c. O2 availability remains constant. d. O2 levels increase, but there is none present above 20,000 feet. e. O2 levels decrease, but there is none present above 20,000 feet.
What are the two most common types of nonrandom mating?
What will be an ideal response?
Genetic drift resulting from a disaster that drastically reduces population size is called
A) natural selection. B) gene flow. C) the bottleneck effect. D) the founder effect.