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Which is a breeding method used by humans to produce new and improved varieties of plants and animals?
A. Crossing-over.
B. Natural selection.
C. Artificial selection.
D. Independent assortment.
If a farmer sees a plant or animal with exceptional characteristics, he or she may purposely breed that plant or animal with a similar one with similar characteristics to perpetuate those desirable traits. Natural selection is when the plant or animal breed without any intervention from humans.
 
 
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While these questions do not fit the MCAT format (they have no related reading passages) they cover concepts one should understand in order to do well in the biological sciences portion of the MCAT.
Taken: 1,093 times
Added: 7/2/2008
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