Noun
(genetics) an organism having two identical alleles of a particular gene and so breeding true for the particular characteristic
Source: WordNetAs with all PCR based methods, highly degraded DNA or very small amounts of DNA may cause allelic dropout (causing a mistake in thinking a heterozygote is a homozygote) or other stochastic effects. Source: Internet
An organism that has two identical alleles for a gene is said to be homozygous for that gene (and is called a homozygote). Source: Internet
The effects of this allele are only seen when it is present in both chromosomes, gg (homozygote). Source: Internet