The chromosome associated with male development, which is the last mysterious piece of the human genome, has been fully sequenced by a team of more than 100 researchers around the world, including ...

Most sexually reproducing species have an even chromosome copy number, but the dog rose does not. What explains its unusual pattern of chromosome inheritance?

Having extra chromosomes is typically an issue for an organism and can disrupt development or cause disease. But some cells benefit instead: For example, cancer cells or pathogenic yeasts can use ...

"That's kind of the kiss of death for that chromosome," meaning the Y chromosome could be headed toward oblivion — completely disappear. But other scientists, including Page, say: Not so fast.

Men with Klinefelter syndrome have an extra X chromosome, meaning their genetic makeup is "47, XXY" instead of the usual "46, XY." They usually lose large amounts of key reproductive cells before ...

Biological males have one X chromosome, so they only need a single affected gene to be color blind. Biological females have two X chromosomes, meaning they must inherit the gene from both parents ...

Finally, they used a new technique developed as part of the project to substitute another chromosome into this strain, resulting in yeast with a genome consisting of 7.5 synthetic chromosomes ...

This is in part because those with XX chromosomes have one inactive X, meaning it doesn't transcribe all the same genes, including SHOX.

"That's kind of the kiss of death for that chromosome," meaning the Y chromosome could be headed toward oblivion — completely disappear. But other scientists, including Page, say: Not so fast.