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X Marks the Sex-Skewed Spot
Rina Shaikh-Lesko | Mar 7, 2016
Alterations in epigenetic markers on the X chromosome may be why males outnumber females among murine offspring bred through in vitro fertilization.
Lizard Swaps Mode of Deciding Its Sex
Kerry Grens | Jul 1, 2015
Sex assignment in bearded dragons can flip from one based on chromosomes to one driven by temperature, researchers report.
Lost Y Chromosome Genes Found on Autosomes
Anna Azvolinsky | May 27, 2015
Mammalian Y chromosome genes with important functions are transferred to autosomal chromosomes more often than previously thought, a study shows.
Doris Bachtrog: Sex Chromosome Wrangler
Molly Sharlach | Jan 1, 2015
Associate Professor, Department of Integrative Biology, University of California, Berkeley. Age: 39
Focus on Sex
Molly Sharlach | Dec 29, 2014
In 2014, new research findings and guidelines brought increased attention to biological differences between males and females.
Vanishing Y Chromosomes
Molly Sharlach | Dec 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.
Female Pigs May Sense Sex of Sperm
Anna Azvolinsky | 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.
The Surprising Evolution of Sex Determination
Rina Shaikh-Lesko | Apr 23, 2014
A detailed analysis of sex chromosomes finds unexpected evolution of functional Y chromosome genes across species.
Week in Review, July 22–26
Jef Akst | Jul 26, 2013
Faux stem cells; X chromosome involved in sperm production; rewarding peer review; clues to flatworm regeneration; an ethereal glow signals death
X Marks the Spot for Sperm Production
Chris Palmer | Jul 21, 2013
A new genetic analysis suggests the human X chromosome evolves rapidly and plays a specialized role in sperm production.