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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance5 Marks
Question
Explain the difference between prokaryotic and eukaryotic DNA.
✓

Answer

Difference between Prokaryotic and Eukaryotic DNA :
S.No.Prokaryotic DNAEukaryotic DNA
1It is found in cytoplasm, mitochondria and chloroplast.It is found in nucleus.
2Much less in amount, less than 0.1 Pg.Much more (> 1 Pg) in amount than prokaryotic DNA.
3It is usually circular, double stranded.It is usually linear, double stranded.
4It is naked, without histone.It is coated with histone.
5It can code for fewer proteins.It can code for far more proteins.
6Non-coding introns are absent.DNA is mosaic of exons (coding regions) and introns (noncoding region).
7G : C contents are more than A : T.A : T contents are more than G : C.
8On beating it is denatured as a tangled mass.It is denatured into 2 separate strands.
9It exists singly.It exists in pairs.
10Repeated sequences absent.Present.
11Very little part of DNA is functionless.Greater part of DNA is noncistronic and functionless.

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