Latest News

Read the latest breaking news, feature stories, and announcements about our exciting research and our brilliant scientists. 

Hot Off the Presses

Research Area
Type
Division
Sort by

Filter By:

Type
Research Area
Division
Sort by
1000 results found for:
Nettie Marie Stevens is shown here looking through a microscope while studying at the Stazione Zoologica in Naples, Italy.

Nettie Marie Stevens is shown here looking through a microscope while studying at the Stazione Zoologica in Naples, Italy, in 1909. In 1904, soon after getting her Ph.D. in biology, Stevens was awarded a grant from Carnegie Science. Her 1905 paper “Studies in Spermatogenesis with Especial Reference to the Accessory Chromosome” produced some of the first work offering cytological evidence demonstrating that the X and Y chromosomes were associated with sex determination. Image Courtesy Bryn Mawr College Special Collections. 
Feature Story

Nettie Stevens Biography