A research paper published two years ago in the Proceedings of the National Academy of Sciences reveals how the spiny rat has evolved a new male-determining gene. The study suggests that millions ...

This preservation of essential Y chromosome genes through transposition was previously thought to have occurred only in isolated cases, such as the loss of the entire Y chromosome in the Ryukyu spiny ...

In the Amami spiny rat, the Enh14 region is duplicated. The two copies of Enh14 act in concert to upregulate Sox9, which causes the differentiation of the testes. TES, Enh13 and Enh8 are other ...