Spider spinneret evolution: How a genome duplication event 438 million years ago set the stage

Scientists have uncovered a 400-million-year-old genetic secret that gave spiders the ability to produce silk and weave their ...
Science News

Spider silk-making organs evolved due to a 400-million-year-old genetic oops

An ancient ancestor of spiders and relatives doubled its genome about 400 million years ago, setting the stage for the ...