In contrast , one in five ( 21 % ) chose the other option given , that biology teachers should teach only Darwin 's theory of evolution and the scientific evidence that supports it .
Approximately seven in ten ( 69 % ) sided with this view .
One in five ( 21 % ) chose the other option given , that biology teachers should teach only Darwin 's theory of evolution and the scientific evidence that supports it .
Approximately seven in ten ( 69 % ) sided with this view .