Articles tagged History of Genetics
(25 results)

The vibrant passion-vine butterfly species Heliconius erato doesn’t taste as good as it looks. The flesh of this South and Central American species accumulates toxic compounds to discourage would-be predators, who quickly learn to associate the butterflies’ unpleasant taste with their bold red warning colors and patterns. But H. erato isn’t the only species that…

Since the 17th century, the tiny medaka fish that dart through rice paddies in Japan have been bred as living ornaments. Though in the wild they are a nondescript mud color, medaka occasionally turn up in flashier mutant varieties — orange-red, pearlescent white, black splotched — that were much prized by generations of fish fanciers.…

One feverish night, just over 100 years ago, an undergraduate in Thomas Hunt Morgan’s lab created the first genetic map. Realizing that the frequency of crossing over could be used to work out out the linear order of genes on a chromosome, that student, Alfred Sturtevant, published his map in 1913 and laid the foundation…