Related Experiment Videos
Reduce your pelvis in 10000 years or less.
Meredith E Protas1, Clifford J Tabin
1Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 02115, USA.
Developmental Cell
|May 8, 2004
Summary
Evolutionary pelvic reduction in threespine stickleback fish is linked to a genetic mutation. A regulatory change in the Pitx1 gene explains this significant evolutionary adaptation in pelvic structures.
Area of Science:
- Evolutionary biology
- Genetics
- Developmental biology
Background:
- Organismal structures can be reduced over evolutionary time.
- The threespine stickleback fish exhibits variation in pelvic spine size.
Purpose of the Study:
- To investigate the genetic underpinnings of pelvic reduction in threespine stickleback fish.
- To identify the specific gene responsible for the loss of pelvic structures.
Main Methods:
- Comparative genetic analysis of stickleback populations with and without pelvic structures.
- Examination of gene expression patterns, focusing on the Pitx1 gene.
Main Results:
- A regulatory mutation in the Pitx1 gene was identified as the primary cause of pelvic reduction.
- This mutation affects the expression of Pitx1, a key developmental gene.
Conclusions:
- Regulatory mutations, like the one in Pitx1, are significant drivers of evolutionary adaptation.
- The Pitx1 gene plays a crucial role in the development of pelvic structures in threespine stickleback fish.