题干

下列有关孟德尔的“假说—演绎法”的叙述中不正确的是

A:在“—对相对性状的遗传实险”中提出了等位基因的说法

B:“测交实验”是对推理过程及结果进行的检验

C:“生物性状是由遗传因子决定的;体细胞中遗传因子成对存在;配子中遗传因子成单存在;受精时,雌雄配子随机结合”属于假说内容

D:“F1能产生数量相等的两种配子”属于推理内容

上一题 下一题 0.0难度 选择题 更新时间:2018-04-27 03:10:50

答案(点此获取答案解析)

A

同类题2

阅读下面短文,从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。

    In December 2016, Jordan Kahana was driving along a highway in Arizona when he 1 two small dogs on the side of the road. The puppies were eight weeks old. Kahana was on his 2 to Colorado to celebrate the beginning of the New Year with friends, but he stopped and rushed the 3 abandoned(被抛弃的)dogs to the animal hospital. After that, Kahana decided to 4 them.

    Kahana 5 his job as a digital director in 2017 to travel more. 6 he rescued the pups he was planning on 7 full time. He had bought a one-way ticket to Bali in November, to leave that upcoming March. After rescuing the pups, however, his plans took a bit of a 8. But still, the 9 was to travel. So 10 flying for international adventures, he decided road trips would be their thing!

    11 then, the 30-year-old man has traveled about 32,000 miles with the two 12pups, who he named Sedona and Zeus. So far, the three have been to 35 states together and hiked through 13 national parks. They've even visited Canada. Kahana posts his travels on his 14 Instagram account viewed by hundreds of thousands.

    When asked how he 15 Sedona's and Zeus' names, Kahana said that he first found the dogs when he was 16 from Sedona, Arizona to Page, Arizona.He thought Sedona was a 17 name for the female puppy and Zeus, which sounds a good name for a 18 dog, was taken from Greek Mythology.

    “I was 19 forced to become a morning person,” Kahana said. “The pups, without 20, wake me up around 6:30 in the morning to go out for a walk.”