Genetically active area of chromosome is called
Genetically active area of chromosome is called
- A
Euchromatin
- B
Heterochroatin
- C
Heptan
- D
Cistron
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The length of a helix of $DNA$ is
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If Adenine makes $30\, \%$ of the $DNA$ molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?
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- [NEET 2021]
What background information did Watson and Crick have made available for developing a model of $DNA$ ? What was their contribution ?
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Assertion : Histones are basic proteins of major importance in packaging of eukaryotic $DNA$. $DNA$ and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Reason : Histones are of five major types $H_1,\,H_2A\,, H_2B,H_3$ and $H_4$ .
Assertion : Histones are basic proteins of major importance in packaging of eukaryotic $DNA$. $DNA$ and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Reason : Histones are of five major types $H_1,\,H_2A\,, H_2B,H_3$ and $H_4$ .
- [AIIMS 2000]
Which one of the following does not follow the central dogma of molecular biology?
Which one of the following does not follow the central dogma of molecular biology?
- [AIPMT 2010]