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heterozygosis

(het′ər ō zī gō′sis)

noun

the condition of being a heterozygote
the production of a heterozygote by the union of unlike gametes

Origin: hetero- + ModL zygosis < Gr, a joining < zygon, yoke

See heterozygosis in American Heritage Dictionary 4

noun

The formation of a zygote by the union of genetically different gametes.
The condition of being a heterozygote.

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