homozygote

American  

[hoh-muh-zahy-goht, -zig-oht, hom-uh-] / ˌhoʊ məˈzaɪ goʊt, -ˈzɪg oʊt, ˌhɒm ə- /

noun

Biology.

1. an organism with identical pairs of genes with respect to any given pair of hereditary characters, and therefore breeding true for that character.

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homozygote British  

/ -zɪ-, -ˈzɪɡ-, ˌhəʊməʊˈzaɪɡəʊt, ˌhɒm-, ˌhəʊməʊzaɪˈɡɒtɪk, ˌhɒm- /

noun

1. an animal or plant that is homozygous and breeds true to type Compare heterozygote

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Other Word Forms

• homozygosis
  noun
• homozygotic
  adjective

Etymology

Origin of homozygote

First recorded in 1900–05; homo- + zygote

Example Sentences

Figure 12.5 A test cross can be performed to determine whether an organism expressing a dominant trait is a homozygote or a heterozygote.

From Textbooks • Jun. 9, 2022

The dominant lethal inheritance pattern is one in which an allele is lethal both in the homozygote and the heterozygote; this allele can only be transmitted if the lethality phenotype occurs after reproductive age.

From Textbooks • Jun. 9, 2022

For instance, the recessive lethal Curly allele in Drosophila affects wing shape in the heterozygote form but is lethal in the homozygote.

From Textbooks • Jun. 9, 2022

Coat color depends on the A gene, which shows dominance, with the recessive homozygote showing a different phenotype than the heterozygote or dominant homozygote.

From Textbooks • Apr. 25, 2013

An individual may be a homozygote with respect to one factor and a heterozygote with respect to another.

From Applied Eugenics by Popenoe, Paul