Open Access. Powered by Scholars. Published by Universities.®

Cell Biology Commons

Open Access. Powered by Scholars. Published by Universities.®

PDF

2014

Undergraduate Honors Theses

Biology

Articles 1 - 1 of 1

Full-Text Articles in Cell Biology

Evolutionary Conservation Of A Modified Spermatogenesis Program In Rhabditis Nematodes With Skewed Sex Ratios, Ethan S. Winter May 2014

Evolutionary Conservation Of A Modified Spermatogenesis Program In Rhabditis Nematodes With Skewed Sex Ratios, Ethan S. Winter

Undergraduate Honors Theses

The cellular divisions in Rhabditis sp. SB347 male spermatogenesis have been modified to re-purpose an asymmetric division. This results in the dramatically skewed sex ratios observed in the progeny of males of this species. Here we confirm this asymmetry in the division of tubulin and major sperm protein (MSP). MSP, a necessary sperm component, is segregated exclusively into spermatids bearing the X chromosome while tubulin is segregated into the nullo-X sperm. Timing of the partitioning events reveals that MSP migration is not directly dependent on tubulin spindle asymmetry. Additionally, the endoplasmic reticulum is also segregated asymmetrically to the nullo-X spermatid ...