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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】下列细胞中含有一个染色体组的细胞是:
A.
洋葱的表皮细胞
B.
月季的受精卵和牡丹的体细胞
C.
单倍体普通小麦的体细胞和单倍体玉米的体细胞
D.
小麦的卵细胞和单倍体玉米的体细胞
【单选题】Genetic Testing Genetic testing is transforming medicine and the way families think about their health. As science uncovers the complicated secrets of DNA, we face difficult choices and new challenges...
A.
5 to 10 percent.
B.
10 percent.
C.
About 15 percent.
D.
5 percent.