The Extinction of the Y Chromosome and the Evolution of New Human Species
The Y chromosome is shrinking and some scientists worry it could disappear altogether, potentially leading to the evolution of new species of humans with different sex determining genes. This has already happened with certain rodent species. However, the implications for humans are still uncertain.
Key Points
- The Y chromosome is shrinking and may disappear in the future.
- Certain rodent species have already lost their Y chromosomes and evolved different sex determining genes.
- Humans may evolve a new sex determining gene in the future, potentially leading to the emergence of new human species.
Pros
- Potential evolution of new human species with different sex determining genes.
Cons
- Risk of a 'war' of sex genes leading to the separation of human species.