The Latest News

Read the latest news about our breakthrough discoveries, get a behind-the-scenes looks at our researchers at work, and join our scientists as they redefine the pursuit of what's possible. 

Artist's conception of neutron stars colliding, by Robin Dienel, courtesy of Carnegie Institution for Science
Research Area
Type
Division
Sort by

Filter By:

Type
Research Area
Division
Sort by
108 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