zygosity

Dictionary: zy·gos·i·ty   (zī-gŏs'ĭ-tē)

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The genetic condition of a zygote, especially with respect to its being a homozygote or a heterozygote.

The characteristic or condition of a zygote. The term occurs primarily as a suffix combining form to denote genetic makeup, referring specifically to whether the paired alleles determining a particular trait are identical (homozygosity) or different (heterozygosity), or to the condition in twins of having developed from the fertilization of one ovum (monozygosity) or two (dizygosity).

The genetic condition of a zygote, especially with respect to its being a homozygote or a heterozygote.

The condition relating to conjugation, or to the zygote, as (1) the state of a cell or individual in regard to the alleles determining a specific character, whether identical (homozygosity) or different (heterozygosity); or (2) in the case of twins, whether developing from one zygote (monozygosity) or two (dizygosity).