We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen ...

Hamilton, ON, Dec. 16, 2024 – Researchers at McMaster University have uncovered unexpected diversity in the genetic processes that determine the sex of the African clawed frog, a significant ...

Trying to tell the sex of a young kitten takes a little practice, but there are a few subtle signs to look for as you try to ...

Explanation: Chromosomes in a cell carry genes — including those that determine an individual’s sex, specifically held on the visually distinct X and Y chromosomes. Two Xs and you are female ...