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Duplicity. Adult man taking off a mask
Homologous chromosomes, with allele genes on the same locus. Vector illustration.
Photocopy or copier or photocopier machine office equipment workplace for scanner or scanning document or printer for printing paperwork hard copy paper duplicate Xerox or service maintenance repair.
DNA replication. Biological process of producing two identical replicas of DNA from one original DNA molecule. Simplified diagram. Helicase and DNA polymerase enzyme function. Vector illustration.
Many key chains for copy key on locksmith shop.

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