Question

Which of the following features of dna organization do eukaryotes and bacteria have in common (select all that apply)?

a.) DNA breakage in one loop will not affect DNA in other loops

b.) DNA is found within a 30nm filament

c.) DNA is associated with basic proteins

d.) Under electron microscope, DNA will have a beads-on-a-string appearance

e.) a change of supercoiling in a cleaved loop would not affect other loops

Answer 1

Answer is A C E because

• DNA is found in 30 nm filament in eukaryotic chromatin but not in bacterial chromatin.
• DNA is assosciated with basic proteins in eukaryotic and bacterial chromatin.bacterial basic proteins are non histones and eukaryotic basic proteins are histones.
• under electron microscope beads on string are seen in eukaryotic chromatin but in bacterial chromatin it look like lopps.
• DNA breakage and change in supercoiling will not affect on other loops of chrmatin of eukaryotic and bacterial cell.