Module 3 : NUCLEIC ACID HYBRIDIZATION AND AMPLIFICATION

Problems

 

II. Fill in the blanks with appropriate words and terminology.

1. ------- can be used to quickly estimate the concentration and purity of DNA and RNA.

2. Proteins exhibit two absorbance peaks, one between ---------due to peptide bonds absorption and another at about -------.

3. ----------- is the phenomenon of increment of absorbance when any material is exposed to UV light.

4. The IUPAC name for EtBr is -----------------.

5. -------- invented a process Polymerase Chain Reaction (PCR) using the thermo-stable ------.

6. ------------------should be about 3-5 °C below the Tm of the primers.

7. Polymerase enzymes initiate the replication from -------- of the primer towards the ------ of it.

8. In reverse transcription polymerase chain reaction (RT-PCR), first a --------- (template) is reverse transcribed into its ------------- using reverse transcriptase, and subsequently cDNA is amplified using PCR.

9. When the DNA is getting amplified logarithmically at each cycle, the amount of fluorescence ------------- over the basal level.

10. Thermal cycle at which the signal exceeds the fluorescence detection threshold is known as the ------------- (CT ) or crossing point.

11. Southern blot was the first blotting technique named after its pioneer------

12. Northern blotting was developed by ---------------.

13. ------------- consists of either chemically synthesized nucleic acids or modified oligonucleotides with known sequence.

14. --------- consists of template nucleic acid molecules with which probes will hybridize and form complex and heterogeneous mixture.

15. Oligonucleotides are usually end-labeled using ----------------.

16. Isotopes generally used for labeling nucleotides are -----------.

17. --------- is a steroidal glycoside obtained from the plant Digitalis t.

18. ------------- of chemicals such as ethidium bromide and proflavine allows them to insert between stacked bases in -----------.

19. ------- are DNA elements which have ability to move from one region to another region in the genome.