Why is genetic diversity within species important?
What will be an ideal response?
Genetic diversity allows a species to live in a variety of environments and adapt to changes in the environment.
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Heterochrony
1.is a change in the timing of development. 2.causes the morphology of closely related species to be the same. 3.is a different rate of growth in various body parts. 4.is a cause of mass extinction. 5.None of the options is correct.
As a research scientist, you measure the amount of ATP and NADPH consumed by the Calvin cycle in 1 hour. You find that 30,000 molecules of ATP were consumed, but only 20,000 molecules of NADPH were consumed. Where did the extra ATP molecules come from?
A) photosystem II B) photosystem I C) cyclic electron flow D) linear electron flow
Which of the following animals have the highest O2 consumption per gram ever recorded for animals?
a. aquatic animals b. insects at rest c. insects at flight d. birds at flight
Normal cells stop their division when it gets too crowded, which is celled ______ inhibition.
a. density-independent b. density-dependent c. contact inhibition d. none of the above