基因型为YyRr(两对基因独立遗传)的个体自交,后代中至少有一对基因为显性纯合的

题型:选择题

问题:

基因型为YyRr(两对基因独立遗传)的个体自交,后代中至少有一对基因为显性纯合的概率是[     ]

A.4/16

B.5/16

C.7/16

D.9/16

考点:自由组合定律
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根据2007年中国海洋经济统计公报,我国亿吨级港口数量达到多少个?

题型:选择题

饮用水的氯化消毒是

A.灭菌
B.生物消毒
C.预防性消毒
D.终末消毒
E.随时消毒

题型:选择题

Kofi Annan says helping survivors of last week’’s earthquake and (1)________in the Indian Ocean is (2)________. The United Nations secretary-general says countries that have offered aid must (3)________and provide it. The offers add up to around (4)________dollars. United Nations officials say (5) ________of that is needed during the next six months.The concern about offers of international aid is (6)________. For example, the earthquake in Bam, Iran, in (7)________of 2003 killed more than (8) ________people. Countries and groups offered hundreds of millions of dollars (9) ________. The United Nations says it has (10)________only about (11)________dollars in aid received so far. Governments and organizations that offered help (12) ________that, however.On (13)________Mr. Annan met with world leaders in Jakarta, Indonesia to discuss aid for (14)________. The leaders discussed and (15)________the idea of (16)________owed by affected nations. But the leaders did not say they would do so. Some said that (17)________to survivors would be more helpful.Representatives of (18)________countries and international organizations attended the meeting in Jakarta. Officials say they will cooperate to develop (19)________ for the Indian Ocean and the (20)________.

题型:选择题

计算机体系结构设计这不必关心指令集具体实现。

题型:选择题

存款货币银行作为“支付中介”而提供的多种金融服务的业务是存款货币银行的( )。

A.资产业务

B.所有者权益

C.负债业务

D.中间业务

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