"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.

In the wild it could slash numbers of malaria-spreading mosquitoes, reports the journal Nature Communications."

Jonathan Webb reports for BBC News June 10, 2014. [2]