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

In E.coli, the lac operon gets switched on when:

To initiate translation, the mRNA first binds to:

If the base sequence of a codon in mRNA is 5' - AUG-3', the sequence of tRNA pairing with it must be:

The RNA polymerase holoenzyme transcribes:

If the sequence of nitrogen base of the coding strand of DNA in a transcription unit is:
5' - A T G A A T G - 3', the sequence of bases in its RNA transcript would be:

If Meselson and Stahl's experiment is continued for four generations in bacteria, the ratio of 15_N/15_N :15_N/14_N : 14N/14_N containing DNA in the fourth generation would be:

Which of the following are the functions of RNA?

Which was the last human chromosome to be completely sequenced:

Regulatory proteins are the accessory proteins that interact with RNA polymerase and affect its role in transcription. Which of the following statements is correct about regulatory protein?

Control of gene expression takes place at the level of:

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?

Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?

The human chromosomes with the highest and least number of genes in them are respectively:

The distance between the genes a,b,c,d in mapping units are
a-d=3.5; b-c=1; a-b=6; 
c-d=1.5; a-c=5
Find out the sequence of arrangement of these genes