X:A ratio
id:
x-a-ratio-302-2906158
title:
X:A ratio
text:
The X:A ratio is the ratio between the number of X chromosomes and the number of sets of autosomes in an organism. This ratio is used primarily for determining the sex of some species, such as drosophila flies and the C. elegans nematode. The first use of this ratio for sex determination is ascribed to Victor M. Nigon. Generally, a 1:1 ratio results in a female and a 1:2 ratio results in a male. When calculating the ratio, Y chromosomes are ignored. For example, for a diploid drosophila that has
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wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/X:A_ratio
date created:
date modified:
2023-09-22T03:00:04Z
main entity:
{"identifier":"Q8041667","url":"https://www.wikidata.org/entity/Q8041667"}
image:
fields total:
13
integrity:
13