Some flowers bloom in the spring, while others bloom in the summer. This is an example of reproductive isolation.
A. prezygotic
B. sympatric
C. allopatric
D. parapatric
E. postzygotic
A. prezygotic
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Marine bony fishes have blood that is just as salty as seawater
Indicate whether the statement is true or false
The process during which potassium and hydrogen
ions, penicillin, and some toxic substances are put into the urine by active transport is a. tubular secretion. b. reabsorption. c. filtration. d. countercurrent multiplication. e. diffusion.
Blurred vision, flashes of light in the absence of outside stimulation and loss of peripheral vision are
associated with a. astigmatism. b. retinoblastoma. c. retinal detachment. d. glaucoma. e. cataracts.
Normal cells become cancer cells when
A.) regulation of cell growth and division occurs B.) cells respond to control mechanisms C.) cells pass through G1 D.) cells do not respond to checkpoints