choose the option that contains all the correct statements about histones? 1) nuclesome contain two H2A...

choose the option that contains all the correct statements about histones? 1) nuclesome contain two H2A two h2b two h3 and two h4 histones 2) histones have an overall negative charge 3) histones have overall positive charge 4) histones are fonud in euchromatin 5) histones are found in heterchromatin

Expert Solution

Ans.Statements 1,3,4 and 5 are correct.

Explanation: statement (1).Nucleosome contain two H2A ,two H2B,two H3 and two H4 histones : Nucleosome core particle consists of DNA wrapped around the histone Octamer,that consists of 2 copies of each of the core histones H2A,H2B,H3 and H4.

(3).Histones have an overall positive charge:helix dipole form alpha helixes that lead to accumulate a net positive charge at the point of intraction with negatively charged phosphate groups on the DNA.

(4).Histones are found in Euchromatin:Histones are the chief protein components of chromatin.The DNA which code genes that are actively transcibed is more loosly packaged to form Euchromatin.

(5).Histones are found in Heterochromatin:Histones are the chief protein components of chromatin either it is euchromatin or heterochromatin.Heterochromatin is the DNA which codes the inactive genes and is more condensed ,associated with histone proteins.

gladiator answered 2 years ago

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choose the option that contains all the correct statements about histones? 1) nuclesome contain two H2A...

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