Packaging of DNA
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BIOXII06: MOLECULAR BASIS OF INHERITANCE

342905 Read (i) to (v) and find the correct option
i. Nitrogen base is linked to pentose sugar through \(\mathrm{N}\)-glycosidic linkage
ii. Phosphate group is linked to \(\mathrm{OH}\) of a nucleoside through phosphoester linkage
iii. Two nucleosides are linked through \(\mathrm{N}\)-glycosidic linkage
iv. Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome
v. Chromatin that is more densely packed and stains dark is called euchromatin

1 i alone is wrong
2 iv alone is wrong
3 iii and v are wrong
4 i, ii, iii wrong
BIOXII06: MOLECULAR BASIS OF INHERITANCE

342906 Refer to the given figure of nucleosome, and select the correct option:
supporting img

1 Structure A is \(\mathrm{H}_{1}\) protein, which is rich arginine and aspartic acid.
2 Structure A is the histone core with two molecules each of four histone proteins.
3 Structure C is single-stranded DNA made up of 200 nucelotides.
4 Structure B is called Nu-Body, which has five types of histone proteins.
BIOXII06: MOLECULAR BASIS OF INHERITANCE

342907 Statement A :
Histones are basic proteins of major importance in packaging of eukaryotic DNA, DNA and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Statement B :
Histones are five major types \(\mathrm{H}_{1}, \mathrm{H}_{2} \mathrm{~A}, \mathrm{H}_{2} \mathrm{~B}, \mathrm{H}_{3 \mathrm{~A}}\) and \(\mathrm{H}_{4 \mathrm{~A}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
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BIOXII06: MOLECULAR BASIS OF INHERITANCE

342905 Read (i) to (v) and find the correct option
i. Nitrogen base is linked to pentose sugar through \(\mathrm{N}\)-glycosidic linkage
ii. Phosphate group is linked to \(\mathrm{OH}\) of a nucleoside through phosphoester linkage
iii. Two nucleosides are linked through \(\mathrm{N}\)-glycosidic linkage
iv. Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome
v. Chromatin that is more densely packed and stains dark is called euchromatin

1 i alone is wrong
2 iv alone is wrong
3 iii and v are wrong
4 i, ii, iii wrong
BIOXII06: MOLECULAR BASIS OF INHERITANCE

342906 Refer to the given figure of nucleosome, and select the correct option:
supporting img

1 Structure A is \(\mathrm{H}_{1}\) protein, which is rich arginine and aspartic acid.
2 Structure A is the histone core with two molecules each of four histone proteins.
3 Structure C is single-stranded DNA made up of 200 nucelotides.
4 Structure B is called Nu-Body, which has five types of histone proteins.
BIOXII06: MOLECULAR BASIS OF INHERITANCE

342907 Statement A :
Histones are basic proteins of major importance in packaging of eukaryotic DNA, DNA and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Statement B :
Histones are five major types \(\mathrm{H}_{1}, \mathrm{H}_{2} \mathrm{~A}, \mathrm{H}_{2} \mathrm{~B}, \mathrm{H}_{3 \mathrm{~A}}\) and \(\mathrm{H}_{4 \mathrm{~A}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
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BIOXII06: MOLECULAR BASIS OF INHERITANCE

342905 Read (i) to (v) and find the correct option
i. Nitrogen base is linked to pentose sugar through \(\mathrm{N}\)-glycosidic linkage
ii. Phosphate group is linked to \(\mathrm{OH}\) of a nucleoside through phosphoester linkage
iii. Two nucleosides are linked through \(\mathrm{N}\)-glycosidic linkage
iv. Negatively charged DNA is wrapped around positively charged histone octamer to form nucleosome
v. Chromatin that is more densely packed and stains dark is called euchromatin

1 i alone is wrong
2 iv alone is wrong
3 iii and v are wrong
4 i, ii, iii wrong
BIOXII06: MOLECULAR BASIS OF INHERITANCE

342906 Refer to the given figure of nucleosome, and select the correct option:
supporting img

1 Structure A is \(\mathrm{H}_{1}\) protein, which is rich arginine and aspartic acid.
2 Structure A is the histone core with two molecules each of four histone proteins.
3 Structure C is single-stranded DNA made up of 200 nucelotides.
4 Structure B is called Nu-Body, which has five types of histone proteins.
BIOXII06: MOLECULAR BASIS OF INHERITANCE

342907 Statement A :
Histones are basic proteins of major importance in packaging of eukaryotic DNA, DNA and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Statement B :
Histones are five major types \(\mathrm{H}_{1}, \mathrm{H}_{2} \mathrm{~A}, \mathrm{H}_{2} \mathrm{~B}, \mathrm{H}_{3 \mathrm{~A}}\) and \(\mathrm{H}_{4 \mathrm{~A}}\).

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
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