Do you think that, in second language acquisition, acquisition will continue to happen for adults Why or why not

图1是具有两种遗传病的家族系谱图，设甲病显性基因为A，隐性基因为a；乙病显性基因为B，隐性基因为b。若II-7为纯合体，请据图回答：

甲病属于（）遗传病，乙病属于（）遗传病。