August Weismann, German zoologist

August Weismann, German zoologist

C022/5046 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 25.0MB

Downloadable file size: 4.7MB

Price image Pricing

Please login to use the price calculator


Credit: NATIONAL LIBRARY OF MEDICINE/SCIENCE PHOTO LIBRARY

Caption: August Weismann (1834-1914), German zoologist. Weismann spent a few years practising medicine before entering research. He became a teacher at the University of Freiburg, and was forced to be a theorist by failing eyesight. He worked in heredity, proposing that all organisms contain a 'germ plasm'. He later identified this with the chromosomes of the cell nucleus. He proposed the chromosome number halved by division in reproduction, with one half from each parent merging. He saw this as the basis of variability. Although broadly correct, Weismann incorrectly thought chromosomes were immune to outside influence.

Release details: Model release not available. Property release not required.

Keywords: 1800s, 1900s, 19th century, 20th century, adult, august weismann, biological, biologist, biology, black-and-white, caucasian, chromosomal, chromosome theory, chromosomes, european, evolution, evolutionary theorist, fauna, genetic, genetics, germ plasm, german, heredity, historical, history, human, male, man, medical, monochrome, nature, one person, people, person, portrait, reproduction, reproductive, scientist, theory, university of freiburg, zoological, zoologist, zoology

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.