Which of the following was the first
invertebrate listed as endangered by the US
Fish and Wildlife Service?
a. marine mollusk
b. white abalone
c. Atlantic lobster
d. sea anemone
e. blind crab
B
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In New Mexico, large expanses of black lava create patches of unique habitat. If, in every generation, selection favors the darkest colored pocket mice in those habitats because they are best hidden from predators, this would be an example of:
A. balancing selection. B. stabilizing selection. C. directional selection. D. disruptional selection. E. heterozygote advantage.
The cellular basis of muscular dystrophy is that some of a child's muscle cells
A) have combined into a structure that cannot contract. B) lack DNA. C) lack a protein that enables them to withstand the force of contraction. D) have too much of a contractile protein and become weak.
The X and Y chromosomes ____
a. are responsible for autosomal recessive inheritance b. will lead to color-blindness in all carriers c. are found paired with all 22 autosomal chromosomes d. are responsible for albinism e. play major roles in determining the sex of an individual
Labs intended to work with highly infectious airborne pathogens, such as tuberculosis, are classified as
a) BSL-1. b) BSL-2. c) BSL-3. d) BSL-4.