Q. No.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) |
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
Semiconservative replication of DNA was first demonstrated in:
1. Drosophila melanogaster
2. Escherichia coli
3. Streptococcus pneumoniae
4. Salmonella typhimurium
What is not true for genetic code?
1. A codon in mRNA is read in non-contiguous fashion
2. It is nearly universal
3. It is degenerate
4. It is unambiguous
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