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image: X Marks the Sex-Skewed Spot

X Marks the Sex-Skewed Spot

By | March 7, 2016

Alterations in epigenetic markers on the X chromosome may be why males outnumber females among murine offspring bred through in vitro fertilization.

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image: Lizard Swaps Mode of Deciding Its Sex

Lizard Swaps Mode of Deciding Its Sex

By | July 1, 2015

Sex assignment in bearded dragons can flip from one based on chromosomes to one driven by temperature, researchers report.

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image: Lost Y Chromosome Genes Found on Autosomes

Lost Y Chromosome Genes Found on Autosomes

By | May 27, 2015

Mammalian Y chromosome genes with important functions are transferred to autosomal chromosomes more often than previously thought, a study shows.

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image: Doris Bachtrog: Sex Chromosome Wrangler

Doris Bachtrog: Sex Chromosome Wrangler

By | January 1, 2015

Associate Professor, Department of Integrative Biology, University of California, Berkeley. Age: 39

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image: Focus on Sex

Focus on Sex

By | December 29, 2014

In 2014, new research findings and guidelines brought increased attention to biological differences between males and females.

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image: Vanishing Y Chromosomes

Vanishing Y Chromosomes

By | December 4, 2014

A new study reveals an association between smoking and rates of Y chromosome loss in blood cells, which may explain elevated cancer risk among male smokers.

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image: Female Pigs May Sense Sex of Sperm

Female Pigs May Sense Sex of Sperm

By | May 21, 2014

The oviducts of pigs exhibit different gene expression profiles depending on their exposure to sperm with either an X or a Y chromosome, a study shows. 

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image: The Surprising Evolution of Sex Determination

The Surprising Evolution of Sex Determination

By | April 23, 2014

A detailed analysis of sex chromosomes finds unexpected evolution of functional Y chromosome genes across species.

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image: Week in Review, July 22–26

Week in Review, July 22–26

By | July 26, 2013

Faux stem cells; X chromosome involved in sperm production; rewarding peer review; clues to flatworm regeneration; an ethereal glow signals death

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image: X Marks the Spot for Sperm Production

X Marks the Spot for Sperm Production

By | July 21, 2013

A new genetic analysis suggests the human X chromosome evolves rapidly and plays a specialized role in sperm production.

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