What are the contributions of Nettie Stevens in biology, particularly regarding sex determination?
Understand the Problem
The question is asking for information about Nettie Stevens and her contributions to biology, particularly in relation to sex determination in animals through chromosomes.
Answer
Nettie Stevens discovered sex determination by X and Y chromosomes.
Nettie Stevens discovered that sex is determined by chromosomes, specifically through the presence of X and Y chromosomes in males and X chromosomes in females. Her work showed that males determine the sex of the offspring.
Answer for screen readers
Nettie Stevens discovered that sex is determined by chromosomes, specifically through the presence of X and Y chromosomes in males and X chromosomes in females. Her work showed that males determine the sex of the offspring.
More Information
Nettie Stevens's discovery of sex chromosomes was a pivotal moment in genetics, linking biological inheritance to chromosomal patterns and clarifying debates over sex determination.
Tips
A common mistake is assuming that chromosomal sex determination is universal across all species; in fact, it varies greatly.
Sources
- Nettie Stevens discovered XY sex chromosomes. She didn't ... - Vox - vox.com
- Nettie Stevens - Wikipedia - en.wikipedia.org
- Nettie Stevens Biography | Carnegie Science - carnegiescience.edu
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