What causes rats without a Y chromosome to become male?

A look at the brains of an endangered spiny rat off the coast of Japan by University of Missouri (MU) Bond Life Sciences Center scientist Cheryl Rosenfeld could illuminate the subtle genetic influences that stimulate a mammal's ...

It's a girl: Gene silencing technology alters sex of prawns

Israeli scientists have developed a novel method for generating single-sex populations of prawns. This could be used to boost the productivity of aquaculture farms and even as a biocontrol measure against invasive species ...

A single gene, doublesex, controls wing mimicry in butterflies

A single gene regulates the complex wing patterns, colors and structures required for mimicry in swallowtail butterflies, report scientists from the University of Chicago, March 5 in Nature. Surprisingly, the gene described, ...

Timing germ cell development

(Phys.org) —Scientists from the Friedrich Miescher Institute for Biomedical Research identify a novel mechanism in early germ cell development. They show how the chromatin modulator PRC1 coordinates the timing of sexual ...

Scientists make stunning inner space observations

Scientists using high-powered microscopes have made a stunning observation of the architecture within a cell – and identified for the first time how the architecture changes during the formation of gametes, also known ...

Biologists determine microRNA activity is suppressed in mouse ovum

Biologists at the University of Pennsylvania studying oocytes in mice, the immature egg cells necessary for sexual reproduction, have demonstrated an unusual behavior in microRNA, or miRNA, activity that may be the first ...

The story of X -- evolution of a sex chromosome

(PhysOrg.com) -- Move over, Y chromosome - it's time X got some attention. In the first evolutionary study of the chromosome associated with being female, University of California, Berkeley, biologist Doris Bachtrog and her ...

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