皮皮学，免费搜题
登录
搜题
【简答题】
美国新希望生殖医学中心团队于2016年10月19日在美国生殖医学学会会议上正式宣布,世界首个细胞核移植“三父母”男婴已于2016年4月诞生。下图是该男婴的培育过程示意图,请据图回答问题: 上述“三亲婴儿”的核DNA由母亲甲和父亲丙提供,质DNA由捐赠者乙提供。由此可见,“三亲婴儿”的意义在于可以避免子代____遗传病的发生。 过程3在体外进行时需要对精子进行____处理,卵母细胞应处于MII____期。 过程4是早期胚胎培养,需将受精卵移入____继续培养。体外培养需要满足的条件有无毒无菌的环境、营养、适宜的温度和pH,并置于____混合气体的培养箱中进行培养。 过程5是____技术,取____的滋养层细胞可以对移植前的胚胎进行性别鉴定,采用SRY-PCR的鉴定方法,在该PCR扩增过程中若消耗引物分子14个,则DNA扩增了____次。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Education is different frOm schooling in that.
A.
the former is predictable while the latter is not．
B.
the former is specific while the latter is not．
C.
the former is a formalized process while the latter is not．
D.
the former is more open—ended and all-inclusive．than the latter．
【单选题】English differs from Spanish in ______ it is not pronounced as it is written.
A.
what
B.
that
C.
this
D.
which
【简答题】合会这种借贷形式不完全基于信用，依赖抵押品和担保。()
【单选题】It can be inferred from the passage that the author would be most likely to agree with which of the following statements concerning the solution to food shortages in developing countries?
A.
The introduction of technological innovations to reap profits might alleviate (make less)food shortages to some degree, but any permanent solution can come only from effective governmental intervention in the socioeconomic system.
B.
Innovations in agricultural technology will be of little help, and perhaps even harmful, in combating food shortages, no matter how well designed they are to suit local circumstances.
C.
Long-lasting solution will not be found until large landowners adopt improvements that will make production more efficient and thus more profitable.
D.
In order to achieve a meaningful solution to the problem of food shortages, the tastes of the general population must be educated to accept the new food products of modern agricultural technology.
【简答题】10110B=( )D 232O=( )D 232H=( )D
【简答题】有一晶闸管的型号为KK200－9，KK表示 。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
