Respuesta :
crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other.
Human may become extinct organisms .
It is because the crossing over provides genetic variation for human ,which helps us to overcome the changes in environment.It is a way for human to evolve.
It is because the crossing over provides genetic variation for human ,which helps us to overcome the changes in environment.It is a way for human to evolve.