![](https://ambassadors.nef.org/wp-content/uploads/2019/05/lab-mosquitoes.jpg)
Scientists have created mosquitoes that produce 95% male offspring, with the aim of helping control malaria.
Flooding cages of normal mosquitoes with the new strain caused a shortage of females and a population crash.
The system works by shredding the X chromosome during sperm production, leaving very few X-carrying sperm to produce female embryos. Read more