AP Environmental Scienceeasymcq1 pt
Genetic diversity within a crop species is valuable because it
A.provides variation to resist new diseases and climates
B.makes all plants identical
C.increases fertilizer need
D.has no practical value
Explanation
Core Concept
A diverse gene pool holds alleles for novel stresses; monocultures of one variety can be wiped out by a single pathogen — the Irish potato famine lesson.
Correct Answer
Aprovides variation to resist new diseases and climates
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