※ [11~13] . ( 4 )
A. .
B. .
C. .
D. .
参考答案:D
遗传因子在()细胞内总是成双的,而配子只含有成对的遗传因子中的()
That's ___ you are wrong. You skipped Step Two
A.where
B.how
C.what
D.when