Difference between revisions of "Zygosity"
From Genetics Wiki
(Created page with "Zygosity is a way of classifying genotypes. Simply put, if the two copies of a gene in a diploid organism are the same alleles, e.g. ''w''<sup>+</sup>/''w''<sup>+</sup>, the...") |
(No difference)
|
Revision as of 02:33, 15 July 2014
Zygosity is a way of classifying genotypes. Simply put, if the two copies of a gene in a diploid organism are the same alleles, e.g. w+/w+, the individual is a homozygote. If the two alleles are different, e.g. w+/w-, the individual is a heterozygote.
Less commonly we can talk about hemizygotes where an organism only has one copy of a gene. For example most genes on an X-chromosome are present as only one copy in males. Individuals can also be hemizygous because of an insertion or deletion.
