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Question

Human and mouse cells are treated with red (denoted by R) and green (denoted by G) fluorescent dyes respectively and are made to fuse. The resultant cells are kept at 37oC. After sometime, the distribution of dyes on the surface of the fused (human and mouse) cells will be:

A
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B
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C
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D
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Solution

The correct option is D
When human and mouse cells are treated with red and green dyes respectively, the membrane of the human cell will receive red color (R) while that of the mouse cell will receive green color (G). When the human and mouse cells are fused and kept at 37oC, there will be movement of lipids along the fused membrane. So in the new membrane of the fused cell, the two dyes will be mixed up after sometime as shown in option d.


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