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【简答题】
白化病是人类的一种单基因遗传病，请分析回答 (1)正常人皮肤的生发层细胞中有关基因能指导控制有关蛋白质的合成从而产生黑色素，这一指导过程经过__________、___________两个过程。生发层细胞合成黑色素的原料直接来自于______________。 (2)上图为Ⅲ 1 去医院咨询与Ⅲ 4 婚配的合理性时提供的系谱图。医生告诫：如果婚配，则后代患白化病和只患一种病的概率分别是________________、___________________。
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皮皮学刷刷变学霸
举一反三
【单选题】The splitting of water molecules during photosynthesis( )
A.
occurs independently of light
B.
is known as the Calvin-Benson cycle
C.
takes place in the mitochondria
D.
is light-dependent
E.
only occurs in C 4 plant
【简答题】逆向选择(了解)
【简答题】Which of the following characteristic is not
consistent with splitting of the S2?A. loss of synchronization in closure of aortic and pulmonary valves B. most clearly heard at the end of inspiration C....
【简答题】根据冷却方式的不同，发动机分为()和()。
【单选题】The splitting of water molecules during photosynthesis .
A.
occurs independently of light
B.
is known as the Calvin-Benson cycle
C.
takes place in the mitochondria
D.
is light-dependent
【简答题】按照冷却方式不同,将发动机分为?
【单选题】The rate of absorption of a drug taken orally is found to increase as the dose ingested is increased up to a point where further increases in dose result in no further increases in the rate of absorpt...
A.
Facilitated diffusion
B.
Primary active transport
C.
Restricted diffusion
D.
Secondary active transport
E.
Simple diffusion
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