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CBSE Class 10 Answered

define evolution?what are the factors affecting evolution and speciation?
Asked by APARNA PRAVEEN | 09 Mar, 2012, 11:50: AM
answered-by-expert Expert Answer
Evolution is any change across successive generations in the heritable characteristics of biological populations. 
The factors affecting evolution and speciation are geographical isolation, genetic drift and environment.
Answered by Meghna Thapar | 12 Mar, 2012, 11:42: AM
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