Keywords: spermatogenesis

Essential and recurrent roles for hairpin RNAs in silencing de novo sex chromosome conflict in Drosophila simulans

J. Vedanayagam, M. Herbette, H. Mudgett, C. J. Lin, C. M. Lai, C. McDonough-Goldstein, S. Dorus, B. Loppin, C. Meiklejohn, R. Dubruille and E. C. Lai,  PLoS Biol,  21:e3002136. 2023.
Meiotic drive loci distort the normally equal segregation of alleles, which benefits their own transmission even in the face of severe fitness costs to their host organism. However, relatively little is known about the molecular identity of meiotic drivers, their strategies of ...
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Deregulation of Y-linked protamine-like genes in sex chromosome-biased spermatid demise

J. I. Park, G. W. Bell and Y. M. Yamashita,  bioRxiv,  2022.
Meiotic drive is a phenomenon wherein a genetic element achieves a higher rate of transmission than dictated by Mendelian segregation (1-3). One proposed mechanism for meiotic drivers to achieve biased transmission is by sabotaging essential processes of gametogenesis (e.g. ...
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Distinct spermiogenic phenotypes underlie sperm elimination in the Segregation Distorter meiotic drive system

M. Herbette, X. L. Wei, C. H. Chang, A. M. Larracuente, B. Loppin and R. Dubruille,  PLOS Genetics,  17:26. 2021.
Here we show that SD/SD+ males of different genotypes but with similarly strong degrees of distortion have distinct spermiogenic phenotypes. In some genotypes, SD+ spermatids fail to fully incorporate protamines after the removal of histones, and degenerate during the ...
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A Protamine Knockdown Mimics the Function of Sd in Drosophila melanogaster

L. F. Gingell and J. R. McLean,  G3-Genes Genomes Genetics,  10:2111-2115. 2020.
Segregation Distorter (SD) is an autosomal meiotic drive system found worldwide in natural populations of Drosophila melanogaster. This gene complex induces the preferential and nearly exclusive transmission of the SD chromosome in SD/SD+ males. This selfish propagation occurs ...
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