One of the most detailed 3D maps of how the human chromosomes are organized and folded within a cell's nucleus is published ...

There are 23 pairs of chromosomes in the human body. This includes 22 pairs of autosomal or somatic chromosomes that are common to both men and women and one chromosome that differs according to what ...

In 2002, evolutionary biologist Jenny Graves shared a controversial calculation. The human Y chromosome, she wrote two years later in a commentary, "is running out of time." The male-determining sex ...

Chromosome 4 is the fourth largest of the 23 pairs of chromosomes in humans. Chromosome 4 is made up of over 186 million base pairs, the building blocks of DNA which are tightly packed and super ...

Sex chromosomes are unusually labile systems, with frequent shifts between male and female heterogamety and with a large variety in the precise number and types of chromosomes. The lability is further ...

A research paper highlights how spiny rats have developed a new male-determining gene. A recent study suggests a surprising future for human reproduction: the Y chromosome, which is crucial for ...

The sex we're assigned at birth depends largely on a genetic flip of the coin: X or Y? Two X chromosomes and you (almost always) develop ovaries. An X and a Y chromosome? Testes. These packages of ...

A study revealed that the Y chromosome, which determines male sex, is degenerating and may vanish in a few million years. Research on Sry-deficient Amami spiny rats, which lost the Y chromosome but ...

The good news is two branches of rodents have already lost their Y chromosome and have lived to tell the tale. A new paper in Proceedings of the National Academy of Science shows how the spiny rat has ...

Researchers have created male mice with no trace of a Y chromosome, supposedly the defining hallmark of being male. Reproductive biologist Monika Ward of the University of Hawaii in Honolulu and ...