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The Ratio of X Chromosome to Autosomes

The Ratio of X Chromosome to Autosomes

In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...

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Updated: Mar 1, 2026

Measuring and Altering Mating Drive in Male Drosophila melanogaster

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Published on: February 15, 2017

SEXUAL VIGOR AND SEXUAL SELECTION IN DROSOPHILA MELANOGASTER

A Elens¹, J Van Den Haute¹, J Delcour¹

¹Unité de Physiologie cellularie et de Génétique, Facultés Universitaires N. - D. de la Paix, NAMUR, B-5000, Belgium.

Evolution; International Journal of Organic Evolution

|June 1, 2017

Summary

No abstract available in PubMed .

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