Nettie Marie Stevens

1. Nettie Marie Stevens
• Born: July 7, 1861, Cavendish, Vermont, U.S.
• Died: May 4, 1912, Baltimore, Maryland
 Throughout her career, that also included morphology
and taxonomy, Nettie Stevens began her study in
chromosomes and in 1905, after experiments with the
yellow mealworm (Tenebrio Molitor) she published a
paper in which she announced her finding that a
particular combination of the chromosomes known as
X and Y was responsible for the determination of the
sex of an individual.
 Her discovery, even though not yet accepted by the
scientific society, was the first firm link between
heritable characteristics and a particular
chromosome, which was to be further explored and
considered by another researcher, Edmund Wilson,
and ultimately proven to be correct.
Authors:
Lily Dudziak
Adina Dorobantu