microRNAs决定哺乳动物的基因进化(3)
核心摘要：
MicroRNAsareleavinganevolutionaryfootprintonthemajorityofthemammaliangenome,saysGrimson.SomegenesaretryingtopreservebeneficialmicroRNAsitesandothersareevolvinginordertoavoiddevelopingharmfulones.
"MicroRNAs are leaving an evolutionary footprint on the majority of the mammalian genome," says Grimson. "Some genes are trying to preserve beneficial microRNA sites and others are evolving in order to avoid developing harmful ones."