Genetic time bomb will mean a world without males
Melbourne: The poorly designed Y chromosome, which makes men is degrading rapidly and will disappear, even if humans are still around, an evolutionary geneticist has claimed.
Jenny Graves from Canberra University`s Institute for Applied Ecology, said that the process is likely to happen within the next five million years but could have begun in some isolated groups, the Herald Sun reported.
Graves, who first made the prediction some years ago, has been studying sex-determining genes in Australian animals so as to shed light on human genetics.
She said that people think that sex is so important that it wouldn`t change a lot but it changes all over the place and the Y chromosome sort of self-destructs.
Y is always in the male and is active mostly in the testicles to make sperm.
Graves asserted that is a "very dangerous" place as there is a lot of cell division going and with every split there is a chance for a mutation or gene loss.
She said that the X chromosome is all alone in the male, but in the female it has a friend so it can swap bits and repair itself but if the Y gets a hit it`s a downward spiral.
Graves said that the X has about 1000 genes left, too many relating to sex and intelligence and the smaller Y started with about 1700 genes but only has 45 left, and that`s mostly "junk."
She added that if humans don`t become extinct, new sex-determining genes and chromosomes will evolve, maybe leading to the evolution of new hominid species similar to what happened in the Japanese spiny rat, which had survived the loss of its Y.
More from India
More from World
More from Sports
More from Entertaiment
- Top wrestler Narsingh fails dope test, may miss Olympics
- UP: At least 7 children killed as school van collides with train in Bhadohi
- Rajasthan HC acquits Salman Khan in two chinkara poaching cases
- Watch - Moment of Kabul suicide blast caught on camera
- Devotees throng Lord Shiva temples to celebrate first Monday of 'Saawan'
- UK warns of Brexit `shadow` on world economy
- 1st Test: Virat Kohli, R Ashwin shine as India thrash West Indies by innings and 92 runs
- Teenage friend of Munich gunman arrested: police
- 11 injured in blast in German city of Ansbach; suspected bomber killed in explosion
- Scoreboard: India vs West Indies, First Test