The transition between figure A and figure B in Figure 19-1 is NOT characteristic of:
a. extreme changes in the environment.
b. genetic variation.
c. disruptive selection.
d. natural selection.
e. stabilizing selection.
E
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Stable annealing due to hydrogen bonding between DNAs of similar nucleotide sequence from different organisms is referred to as ________.
A. hybridization B. restriction C. ligation D. hydrolysis
An individual's ability to excel in certain types of sports may be due to different muscle fiber types
Certain muscle types allow some people, like marathoners, to have the ability to be involved in sports which require sustained activity of their muscles, while other muscle types, like in sprinters, allow people to excel in sports which require a rapid burst of muscle activity but fatigue quickly. The sustained activity of muscles in marathon runners is due to the higher yield of ATP per glucose. What differences would you predict for marathoners' muscles compared to sprinters'? What will be an ideal response?
If only one twin has a trait, the twins are ____________________ for that trait.Fill in the blank(s) with the appropriate word(s)
You are in charge of water quality for your city's water treatment plant. Of the methods at your disposal, which will be the most efficient and cheapest method of determining the number of viable bacteria in the water coming out of your plant?
A. Direct counts using a microscope and a counting chamber. B. Using a Coulter counter machine. C. Performing serial dilutions of your samples and doing spread plate counts. D. Using membrane filtration followed by placing the membrane in a growth medium for colony counts after incubation. E. Biochemical analysis of secondary metabolites in the water that are given off by bacteria.