更多"断裂基因(interrupted gene orsplit gene)"的相关试题:
[简答题]断裂基因(interrupted gene orsplit gene)
[填空题]绝大多数真核基因是断裂基因(split gene)，______不连续，而绝大多数原核基因是连续基因，无______。
[单项选择]真核基因多数是断裂基因( )。
A. 反映了真核生物的mRNA是多顺反子
B. 因为编码序列“外显子”被非编码序列“内含子”所分隔
C. 因为真核生物的DNA为线性而且被分开在各个染色体上，所以同一个基因的不同部分可能分布于不同的染色体上
D. 在mRNA加工的过程中内含子被切除了，因此内含子对于mRNA加工没有作用
[简答题]断裂基因的概念是根据什么实验提出的？什么是外显子？什么是内含子（3分）
[单项选择]
Passage 1
Gene therapy and gene-based drugs are
two ways we could benefit from our growing mastery of genetic science. But there
will be others as well. Here is one of the remarkable therapies on the cutting
edge of genetic research that could make their way into mainstream medicine in
the coming years.
While it’s true that just about every cell in
the body has the instructions to make a complete human, most of those
instructions are inactivated, and with good reason: the last thing you want for
your brain cells is to start churning out stomach acid or your nose to turn into
a kidney. The only time cells truly have the potential to turn into any and all
body parts is very early in a pregnancy, when so-called stem cells haven’t begun
to specialize.
Yet this untapped potential could be a terrific
boon to medicine. Most diseases invol
A. aggravate moral issues of human cloning
B. bring great benefits to human beings
C. help scientists decode body instructions
D. involve employing surgical instruments
[简答题]基因调控(gene regulation or gene control)
[单项选择]
Passage Two
Gene therapy and gene-based drugs are two ways we could benefit from our growing mastery of genetic science. But there will be others as well. Here is one of the remarkable therapies on the cutting edge of genetic research that could make their way into mainstream medicine in the coming years.
While it’s true that just about every cell in the body has the instructions to make a complete human, most of those instructions are inactivated, and with good reason: the last thing you want for your brain cells is to start churning out stomach acid or your nose to turn into a kidney. The only time cells truly have the potential to turn into any and all body parts is very early in a pregnancy, when so-called stem cells haven’t begun to specialize.
Yet this untapped potential could be a terrific boon to medicine. Most diseases involve the death of healthy cells--brain cells in Alzheimer’s, cardiac cells in heart disease, pancreati
A. there will inevitably be human cloning in the coming year
B. the potential to make healthy body tissues is undoubtedly a boon to human beings
C. it is illegal to clone any kind of creatures in the world
D. it is legal to clone any kind of creatures in the world except human
[单项选择]
Gene therapy and gene based drugs are
two ways we could benefit from our growing mastery of genetic science. But there
will be others as well. Here is one of the remarkable therapies on the cutting
edge of genetic research that could make their way into mainstream medicine in
the coming years.
While it’s true that just about every cell in
the body has the instructions to make a complete human, most of those
instructions are inactivated, and with good reason: the last thing you want for
your brain cells is to start churning out stomach acid or your nose to mm into a
kidney. The only time cells truly have the potential to turn into any and all
body parts is very early in a pregnancy, when so called stem cells haven’t begun
to specialize.
Yet this untapped potential could be a terrific
boon to medicine. Most diseases involve the death of healthy c
A. (A) The principle of gene therapy is applicable to that of cloning.
B. (B) The isolation of stem cells is too difficult to be feasible.
C. (C) It is reasonable for all body instructions to be activated.
D. (D) Cloned animals will eventually take control of the world.
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