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Pronunciation: seg're-ga'shun


  1. Removal of certain parts from a mass, those with infectious diseases.
  2. Separation of contrasting characters in the offspring of heterozygotes.
  3. Separation of the paired state of genes, which occurs at the reduction division of meiosis; only one member of each somatic gene pair is normally included in each sperm or oocyte; an individual heterozygous for a gene pair, Aa, will form gametes half containing gene A and half containing gene a.
  4. Progressive restriction of potencies in the zygote to the following embryo.

[L. segrego, pp. -atus, to set apart from the flock, separate]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.