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1) describe the changes in clarity and viscosity of a nuclear suspension which takes place on the addition of Sodium Dodecyl Sulfate (SDS)? Why do they change take place?

2) Thymus cells encompass a relatively small amount of cytoplasm and this feature makes thymus tissue ideal for DNA extraction. describe why?

3) describe the basic cellular events which take place in a onion root zone with the highest peroxidase activity?

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