A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

This article was originally published on May 31, 2024. It has been updated to include the Oscar-nominated animated film Flow, which is now streaming on Max. Animation has been a part of cinema sin ...

Chromosomes are cellular structures that contain the genetic material. A chromosome is comprised of a single DNA molecule that may be either circular or linear. The full complement of a cell s ...