Molecular Basis...

Select the correct option that correctly fill the blanks i - iv
I. Less than (i) of genome represents structural genes that code for proteins.
II. Chemical substance that binds with repressor and convert it into a non-DNA binding State is (ii).
III. In prokaryotes, during replication RNA primer is removed by (iii) whereas in eukaryotes it is removed by (iv).

Match column I with column II and select the correct option from the-given codes.

The promoter site and the terminator site for transcription are located at

Transcription unit

Which of the following statements regarding human genome is incorrect?

Choose the correct answer from the alternatives given :
A DNA template plus primer with the structure
3 P - TG C GAATTAG C GACAT - P5
5 P - ATCGGTACGACGCTTAAC OH 3
(where P = a phosphate group) is placed in an in vitro DNA synthesis system containing $$Mg^{2+}$$, an excess of the four deoxyribonucleoside triphosphates, etc. and a mutant form of E. Coli DNA polymerase I that lacks 5 $$\rightarrow$$ 3 exonuclease activity. The 5 $$\rightarrow$$ 3 polymerase and. 3 $$\rightarrow$$ 5 exonuclease activities of this aberrant enzyme are identical to those of normal E. Coli DNA polymerase I. It simply has no 5 $$\rightarrow$$ 3 exonuclease activity. What will be the structure of the final product?

Choose the correct answer from the alternatives given :
If Meselson and Stahls experiment is continued for four generations in bacteria, the ratio of $$N^{15}$$- $$N^{15}$$, $$N^{14}$$ - $$N^{15}$$, $$N^{14}$$ - $$N^{14}$$  containing DNA in the fourth generation would be

DNA is a polymer of nucleotides which are linked to each other by 3-5 phosphodiester bond. To prevent polymerisation of nucleotides, which of the following modifications would you choose?

Which of the following statements are correct?
(i) RNA polymerase I transcribes rRNAs.
(ii) RNA polymerase II transcibes snRNAs.
(iii) RNA polymerase III transcibes hnRNA,
(iv) RNA polymerase II transcribes hnRNA.

Choose the correct answer from the alternatives given :
Discontinuous synthesis of DNA occurs in one strand, because