dna 交配
A mating system is a way in which a group is structured in relation to sexual behaviour. Recognised systems include monogamy polygamy which includes polygyny polyandry and polygynandry and promiscuity all of which lead to different mate choice.
Neanderthals were already adapted to the climate of eurasia and some experts think neanderthal dna may have conveyed some advantage to modern humans as they exited africa and colonized points north.

Dna 交配. With respect to animals the term describes which males and females mate under which circumstances.














































































