A) 30 nm chromatin fiber?s will be observed
B) 10 nm chromatin fibers will be observed
C) A scaffold and a huge number of loops of DNA fibres will be observed.
D) A huge number of loops of DNA fibres without scaffold will be observed.
Correct Answer: C
Solution :
As cells enter mitosis, their chromosomes become highly condensed so that they can be distributed to daughter cells. The loops of 30 nm chromatin fires fold upon themselves further to form the compact metaphase chromosomes. Electron micrographs indicate that the DNA in metaphase chromosomes is organised into large loops attached to a protein scaffold when histone-depleted metaphasic chromosomes are viewed under transmission electron microscope, DNA loops attached to the protein scaffold of metaphase chromosomes will be observed.
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