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名词解释题
genomic imprinting(基因组印记)
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更多 “名词解释题genomic imprinting(基因组印记)” 相关考题
考题
下列关于基因印记描述正确的有()。
A.这种等位基因表达取决于亲本来源的现象称为基因组印记，也称亲本印记B.雌性哺乳动物的两条X染色体上的基因，仅随机表达来自父本或者母本的单亲基因，这些被抑制未能表达的基因称为印记基因C.基因组印记的实质是染色质特定CpG岛的甲基化D.由于基因组印记不存在DNA序列变化，但产生了可遗传的基因表达的改变
考题
根据下面资料，回答
Everyone agrees that innovation is the key to solving the many challenges we face as a country from health care to education to the environment, and is fundamental to restoring economic growth and prosperity. But I would put it a slightly different way. We must find a way to rebuild the "innovation infrastructure" in this country.
The problem is not that Americans aren′t as inherently innovative as ever we are. And the level of interest among Americans in the process of innovation--determining the best recipes to make it happen--has been skyrocketing over the past few years. For example, the number of times the word "innovation" appeared in Google news stores has increased by approximately five from Obama′s inauguration to today. Google the term "innovation" and you′ 11 get 342 million hits, approximately half the 676 million hits that "Obama" generates. And according to hash tags org, innovation is trending about the same rate as deficit.
Our problem is that the system is failing our citizens. The "seed corn" of innovation-creative ideas ... fundamental rate it was before. Viable "seed corn" requires an innovation infrastructure in which bright minds are provided the resources and freedom to create and invent according to their passions and curiosities, to take bold risks, and even to fail. Such an innovation infrastructure thrived in the U.S. in the late 20th century as a collaboration that put Americans on the moon, and to the personal computer, the Internet, and the era of genomic medicine.
Americans are ready and willing to embrace the goal of once again leading the world in innovation. This could be the moon shot for the next decade that unifies our country. However, we are at a tremendous disadvantage unless the innovation infrastructure of this country is rebuilt. This requires a new collaboration among government, industry and academia-one that is suited to the challenges and opportunities of the digital age, and that restores the bold risk taking and action orientation of earlier times.
The main content of the text can be summarized as____________.A.the main problem about innovation and the solution
B.the optimistic aspects of the development of innovation
C.the analysis of the advantages and disadvantages of innovation
D.the pessimistic prediction of the development of innovation
考题
根据下面资料，回答
Everyone agrees that innovation is the key to solving the many challenges we face as a country from health care to education to the environment, and is fundamental to restoring economic growth and prosperity. But I would put it a slightly different way. We must find a way to rebuild the "innovation infrastructure" in this country.
The problem is not that Americans aren′t as inherently innovative as ever we are. And the level of interest among Americans in the process of innovation--determining the best recipes to make it happen--has been skyrocketing over the past few years. For example, the number of times the word "innovation" appeared in Google news stores has increased by approximately five from Obama′s inauguration to today. Google the term "innovation" and you′ 11 get 342 million hits, approximately half the 676 million hits that "Obama" generates. And according to hash tags org, innovation is trending about the same rate as deficit.
Our problem is that the system is failing our citizens. The "seed corn" of innovation-creative ideas ... fundamental rate it was before. Viable "seed corn" requires an innovation infrastructure in which bright minds are provided the resources and freedom to create and invent according to their passions and curiosities, to take bold risks, and even to fail. Such an innovation infrastructure thrived in the U.S. in the late 20th century as a collaboration that put Americans on the moon, and to the personal computer, the Internet, and the era of genomic medicine.
Americans are ready and willing to embrace the goal of once again leading the world in innovation. This could be the moon shot for the next decade that unifies our country. However, we are at a tremendous disadvantage unless the innovation infrastructure of this country is rebuilt. This requires a new collaboration among government, industry and academia-one that is suited to the challenges and opportunities of the digital age, and that restores the bold risk taking and action orientation of earlier times.
Today′ s structures of innovation need to be rebuilt because ____________.A.Americans have lost interest in innovation during the past years
B.too many risky ideas have destroyed people' s confidence in innovation
C.institutions, government and business cannot cooperate effectively as before
D.the essential elements of innovation have lost its energy for development
考题
多选题在遗传学研究中，杂交是非常重要的实验手段。在杂交实验中，通常要同时进行正、反交实验，这是因为有时正、反交的结果会有明显差异。以下的遗传方式会导致正、反交结果不同的是（）A从性遗传B细胞质遗传C性连锁遗传D基因组印记基因
考题
多选题Huntington舞蹈症（AD），基因中有（CAG）n的变化，正常人n＝9～34患者n＝37～100如果此基因是父亲传来的，子女发病年龄较早、而且病情严重如果此基因是母亲传来的，子女发病较晚、而且病情轻请问是什么现象（）A错义突变B无义突变C基因组印记D动态突变E同义突变
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