Is stellate a relict meiotic driver?

Article Abstract:

A hypothesis is proposed to account for the existence of the Drosophila Stellate (Ste) gene, an X chromosome gene which is normally repressed, and whose expression results in male sterility. It is proposed that the Ste gene is an X vs. Y meiotic driver which interferes with DNA packing in such a way as to affect the Y chromosome is more deeply than the X. The evolution of such a gene would also allow the evolution of a suppressor on the Y chromosome, which corresponds to the Su(Ste) gene.

Analysis, Evolution (Biology), Suppression, Genetic, Suppressor mutation (Molecular genetics), Evolution, Letter to the Editor

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Copies of a Stellate gene variant are located in the X heterochromatin of Drosophila melanogaster and are probably expressed

Article Abstract:

A study was conducted to analyze variants of X chromosome Stellate genes. These gene variants control crystal formation in XO male primary spermatocytes and hold varied genome positions. Most of the variants are in the 12E site where a mapped Ste locus sits while 1150-bp repeats are in the X heterochromatin. Results indicate that heterochromatic genes which are expressed are part of the Y chomosome locus Su(Ste) interaction.

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Genomic conflicts underlying Haldanes rule

Article Abstract:

Meiotic drive on the sex chromosome as an explanation of Haldane's rule has firm theoretical and empirical background. A number of hypotheses has been forwarded explaining the sterility of hybrids but not all of them implicate the Y chromosome. Therefore,the absence of Y influence on hybrid sterility is not a firm proof against a possible relation between sterility and meiotic drive.

Hybridization, Meiosis, Heterosis

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