Q. No.Which one of the following is not part of a transcription unit in DNA?
1. The inducer
2. A Terminator
3. A promoter
4. The structural gene
If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?
1. TTAGU
2. UAGAC
3. AACTG
4. ATCGU
Removal of introns and joining of exons in a defined order during transcription is called:
1. Looping
2. Inducing
3. Slicing
4. Splicing
1. Nucleotides
2. Nucleosomes
3. Base pairs
4. Uracil
1. sn RNA
2. hn RNA
3. 23 S rRNA
4. 5 S rRNA
Select the two correct statements out of the four (a-d) given below about lac operon:
| a: | Glucose or galactose may bind with the repressor and inactivate it. |
| b: | In the absence of lactose, the repressor binds with the operator region. |
| c: | The z-gene codes for permease. |
| d: | It was explained by Francois Jacob and Jacque Monod. |
The correct statements are:
| 1. | (b) and (c) |
| 2. | (a) and (c) |
| 3. | (b) and (d) |
| 4. | (a) and (b) |
Which one of the following is used as a vector for cloning genes into higher organisms?
1. Baculovirus
2. Salmonella typhimurium
3. Rhizopus nigricans
4. Retrovirus
The one aspect which is not a salient feature of genetic code, is its being:
1. degenerate
2. ambiguous
3. universal
4. specific
DNA or RNA segment tagged with a radioactive molecule is called:
| 1. | vector | 2. | probe |
| 3. | clone | 4. | plasmid |
Satellite DNA is a useful tool in:
1. Organ transplantation
2. Sex determination
3. Forensic science
4. Genetic engineering
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