For two decades, scientists struggled to fully sequence the Y chromosome. Finally, researchers have mapped its full length thanks to recent advances in sequencing technology.
Bettas were likely the first fish welcomed into human homes. Now, scientists are welcoming them into the lab to learn how genes dictate their appearance and behavior.
Evidence is mounting that epigenetic marks on DNA can influence future generations in a variety of ways. But how such phenomena might affect large-scale evolutionary processes is hotly debated.