From the BBC we get news that scientists have managed to observe fruit fly sperm that they have made glow either red or green and watched them duke it out in the sexual selection process. They believe this breakthrough may help advance theories on evolution and could provide solutions to human infertility:
In nature, monogamy is often the exception, promiscuity usually the rule, the BBC's Matt McGrath reports.
But whenever a female of any species mates with more than one male there is a battle between the sperm of the potential fathers as they attempt to fertilise the eggs.
Scientists regard this type of sexual selection as a very important force for evolutionary change.
Prof Scott Pitnick says it was a jaw-dropping moment when he saw the multicoloured sperm through the microscope for the first time.
"It turns out that they [the sperm] are constantly on the move within the female's specialised sperm-storage organs and exhibit surprisingly complex behaviour," Prof Pitnick said.
Below the fold are some other stories on this breakthrough and other related fields of study as recommended by the BBC.