DNA duplication is basically coming up with two copies of a gene due to unequal crossing over. Another cause of DNA duplication is DNA slippage, where during replication, a part of the template strand is skipped by the replication machinery or might even be used twice as template.
What is the role of gene duplication in the process of evolution?
A. Gene duplication has been essential to the destruction of new genes.
B. Gene duplication has been essential to the origin of new genes.
C. Gene duplication is the only source of gene mutation.
D. Gene duplication prevents gene mutation.
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