Novel sex-determination mechanism revealed in mammals

In mammals, the distinction between male and female at the chromosomal level is due to the X and Y chromosomes. Typically, females have two X chromosomes (XX) while males have an X and a Y chromosome (XY). The Sry gene on ...

Understanding how chemical communication evolved in insects

All around us, insects are speaking to each other: jockeying for mates, searching for food, and trying to avoid becoming someone else's next meal. Some of this communication is easy to spot—like the flashes of fireflies ...

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