Answers

2015-09-03T19:34:03+05:30
The changing of the structure of a gene ,resulting in a varient form which may be transmitting to subsequent genrations,caused by the alteration of single base units in dna
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2015-09-04T20:42:16+05:30
Mutation-a sudden,departure from the parent type in one or more heritable characteristics ,caused by a change in a gene or a chromosome.
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