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Biologists Coax Worms Into Growing New Kinds Of Heads

In what sounds like a plot line from a BioShock game, a team of biologists has coaxed an animal into growing a new head and brain resembling those of a different species. The bizarre accomplishment adds to a growing body of research highlighting the importance of non-DNA factors — collectively known as the ‘epigenome’ — in determining the most fundamental aspects of an organism’s anatomy.

Report: DNA Markers Accurately Predict Male Homosexuality

Today, a study presented at the annual meeting of the American Society of Human Genetics tied male homosexuality to chemical markers on DNA that affect how genes are expressed.

Ditch The Binary Model: Sexual Orientation Is More Like Height, With Many Variations

Research on the biological origins of human sexual orientation remains controversial (and poorly funded), and more than two decades of slow work is starting to reveal a much more complex process than anyone first suspected.

This Video Is The Best Explanation Yet Of How Genomes Really Work

There are 20,000 genes in the human genome, but only a small fraction of them are active in any given cell. This video from Nature explains with beautiful clarity the system that activity, turning genes on and off. It’s called the epigenome, and it’s incredibly important. Now you can understand how it works too.

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