Created by StemPy LabTwo statements about the packaging of DNA in eukaryotes are given below. Statement I: A typical nucleosome contains about 2000 bp of DNA helix. Statement II: Histones are rich in the basic amino acid residues lysine and arginine, which carry positive charges in their side chains.
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← Read the following statements about the criteria that a molecule must fulfil to act as genetic material.
(i) It should be able to generate its replica.
(ii) It should be chemically and structurally stable.
(iii) It should provide scope for slow changes (mutation) that are required for evolution.
(iv) It should be able to express itself in the form of Mendelian characters.
(v) It should act as a catalyst for the reactions of the cell.
(vi) Proteins fulfil the first criterion, so they too could serve as genetic material.
How many of the statements above are correct?Match the enzymes in List-I with the RNAs they transcribe in List-II.
List-I (Enzyme)
A. RNA polymerase I of the eukaryotic nucleus
B. RNA polymerase II of the eukaryotic nucleus
C. RNA polymerase III of the eukaryotic nucleus
D. The RNA polymerase of a bacterium
List-II (RNAs transcribed)
I. The precursor of mRNA, heterogeneous nuclear RNA (hnRNA)
II. All the types of RNA of the cell
III. tRNA, 5S rRNA and snRNAs
IV. The rRNAs 28S, 18S and 5.8S →
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