Homozygotes are zygotes (a fertilized egg or ovum) that, with regard to a specific gene, contain identical forms (alleles) of that gene at a particular location (locus) on a chromosome. Homozygotes develop into organisms that are homozygous with regard...

Hemizygous organisms contain a single form (allele) of a gene without a complimentary or corresponding allele. Because the number of alleles present in an organism is referred to as the gene dosage for that organism, hemizygous organisms have the gene...

Heterozygotes are zygotes (a fertilized ovum or egg) that, with regard to a specific gene at a particular chromosomal location (locus), contain different forms (alleles) of that gene. Heterozygotes develop into organisms that are heterozygous with...

The term heterozygous refers to the situation where a specific gene is represented by two differing forms or alelles within the diploid nucleus. The opposite case within the cell is considered homozygous. A homozygote has both copies of the gene...

Zygosity refers to the genetic condition of a zygote. In genetics, zygosity describes the similarity or dissimilarity of DNA between homologous chromosomes at a specific allelic position or gene. Every gene in a diploid organism has two alleles at the...