zygosityhttp://www.oed.com/dictionary/zygosity_n%3Ftab%3Dmeaning_and_usezygosity, n.
First published 1986; not fully revised

zygositynoun

Genetics.
    1. a.
      1952–
      The genetic relationship of twins, triplets, etc., in respect of their being either monozygotic or dizygotic.
      1. 1952
        Instead of exchanging skin between the twin animals whose zygosity it is desired to establish, grafts are being transplanted from both of them to a third, unrelated recipient.
        New Biology vol. 12 42
      2. 1971
        Before recent developments with marker genes, it was not possible to assign with certainty the zygosity of a substantial proportion of twin pairs.
        Nature 23 July 277/1
      3. 1978
        The type of twinning and determination of zygosity are given attention.
        Journal of Royal Society of Medicine vol. 71 311/2
    2. b.
      1967–
      The degree of genetic similarity between alleles which determines whether an individual is homozygotic or heterozygotic for the characteristic expressed.
      1. 1967
        Relationship between Rh0(D) zygosity and red cell Rh0(D) antigen content in family members.
        Journal of Clinical Investigation vol. 46 681 (heading)
      2. 1967
        The members of two families showed a poor correspondence between antibody binding and zygosity.
        Journal of Clinical Investigation vol. 46 681
      3. 1972
        Efforts have been made to determine HL-A zygosity of unrelated subjects by use of the gene-dose effect.
        Transplantation vol. XIV. 793/1

zygosity, n. was first published in 1986; not fully revised.

zygosity, n. was last modified in December 2024.