Copy number variations and young duplicate genes have high methylation levels in sticklebacks.

Abstract excerpt

Gene duplication is an important driver of genomic diversity that can promote adaptive evolution. However, like most mutations, a newly duplicated gene is often deleterious and removed from the genome by drift or natural selection. The early molecular changes that occur soon after duplication therefore may influence the long-term survival of gene duplicates, but relatively little empirical data exist on the...

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