Which of these is the extant (that is, living) species most closely related to species X?

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#Question id: 18799

#Unit 13. Methods in Biology

Propidium iodide-labeled cells can be identify cells within the populations are at each stage of the cell cycle. After passing through flow cytometer a graph is observed

  

In this graph A, B, C, and D represent a cell stage which are

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#Question id: 18800

#Unit 13. Methods in Biology

Propidium iodide-labeled cells can be identify cells within the populations are at each stage of the cell cycle. After passing through flow cytometer a graph is observed

In this double diploid cell are found at 

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#Question id: 18801

#Unit 13. Methods in Biology

Instead of Propidium iodide-labeled cell an alternate compound can be used to which is

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#Question id: 18802

#Unit 13. Methods in Biology

Instead of Propidium iodide-labeled cell an alternate compound can be used which is Carboxyfluorescein succinimidyl ester (CFSE) in CFSE labeling amount of fluorescence emitted is cut in half each time the cell divides. The nature of this compound is

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#Question id: 18803

#Unit 13. Methods in Biology

Carboxyfluorescein succinimidyl ester (CFSE)is non-toxic to cells hence retained till many cycles in CFSE labeling amount of fluorescence emitted is cut in half each time the cell divides, after labelling the following graph is obtained 

 

In this graph 

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#Question id: 18804

#Unit 13. Methods in Biology

Non toxic labelling can be done by using