You treat a sample of DNA with DNAse and run the digested fragments out on an electrophoretic gel.You found mostly long fragments.What can you conclude about this sample of DNA?
A)The sample contains mostly euchromatin.
B)The sample contains relatively few histone proteins.
C)The sample contains mostly heterochromatin.
D)The sample cannot be digested by DNAse.
E)The sample likely represents actively transcribed genes.

Question

Quizplus · Accepted Answer

Heterochromatin is tightly packed DNA, making it less accessible to DNAse, resulting in longer fragments after digestion.

You Treat a Sample of DNA with DNAse and Run