Consider the following statements:

I:	All the reference point while defining a transcription unit is made with the coding strand.
II:	It is the presence of a promoter in a transcription unit that also defines the template and coding strands.
III:	Exons are said to be sequences that do not appear in mature or processed RNA.

Which of the above statements are true?

1.	I and II only	2.	I and III only
3.	II and III only	4.	I, II, and III

Consider the following statements:

Which of the above statements are true?

The DNA profiles below represent four different individuals. Which of the following statements is consistent with the results?

    
1. B is the child of A and C.
2. C is the child of A and B.
3. D is the child of B and C.
4. A is the child of B and C.

Heat-killed S form Streptococcus extract treated with proteases is mixed with live R form Streptococcus cells and injected into living mice. What is most likely to happen?

Nucleic acids are polymers of:

Transcriptionally, active chromatin is termed as:

In a strand of nucleic acid, two nucleotides are linked together by:
1. 3’ – 5’ phosphodiester bond
2. 5’ – 3’ phosphodiester bond
3. 2’ – 5’ phosphodiester bond
4. 3’ – 1’ phosphodiester bond

Griffith’s transformation experiment in Streptococcus pneumoniae demonstrated that:
1.    Heat-killed virulent bacteria failed to produce disease in mice
2.    Live non-virulent bacteria failed to produce disease in mice
3.    Heat-killed virulent bacteria transformed non-virulent bacteria into virulent form
4.    Live virulent bacteria alone produced fatal infection in mice

What facilitates the opening of the helix during the elongation step of transcription?

The repressor of the lac operon is: