Q. No.While analysing the DNA of an organism a total number of 5386 nucleotides were found out of which the proportion of different bases were: Adenine = 29%, Guanine = 17%, Cytosine = 32%, Thymine = 17%. Considering Chargaff’s rule it can be concluded that:
1.
it is a double-stranded circular DNA
2.
It is single-stranded DNA
3.
It is a double-stranded linear DNA
4.
No conclusion can be drawn
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DNA fingerprinting is related to:
| 1. | Molecular analysis of profiles of DNA samples |
| 2. | Analysis of DNA samples using imprinting devices |
| 3. | Techniques used for molecular analysis of different specimens of DNA |
| 4. | Techniques used in the identification of fingerprints of different persons |
A nutritionally wild-type organism that does not require additional biochemicals is:
| 1. | Prototroph | 2. | Auxotroph |
| 3. | Phenotype | 4. | Autotroph |
What is it that forms the basis of DNA Fingerprinting?
| 1. | The relative proportions of purines and pyrimidines in DNA. |
| 2. | The relative difference in the DNA occurrence in blood, skin, and saliva. |
| 3. | The relative amount of DNA in the ridges and grooves of the fingerprints. |
| 4. | Satellite DNA occurring as highly repeated short DNA segments |
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Select the correct option:
|
The direction of RNA synthesis |
The direction of reading of the template DNA strand |
|
|
1. |
5' - 3' |
3' - 5' |
|
2. |
3' - 5' |
5' - 3' |
|
3. |
5' - 3' |
5' - 3' |
|
4. |
3' - 5' |
3' - 5' |
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Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
| 1. | DNA -DNA hybridization | 2. | Polymerase chain reaction |
| 3. | Zinc finger analysis | 4. | Restriction enzymes |
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Taylor conducted experiments to prove the semiconservative mode of chromosome replication on:
| 1. | E. coli | 2. | Vinca rosea |
| 3. | Vicia faba | 4. | Drosophila melanogaster |
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If there are 999 bases in RNA that code for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
| 1. | 1 | 2. | 11 |
| 3. | 33 | 4. | 333 |
Identifying all the genes in the genome that are transcribed into RNA is called:
| 1. | Expressed Sequence Tag | 2. | Sequence Annotation |
| 3. | Inverse PCR | 4. | Retrotransposition |
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For the multiplication of any alien piece of DNA in an organism it needs to be a part of a chromosome that has a specific:
| 1. | Telomeric sequence | 2. | Multiple cloning site |
| 3. | Ori | 4. | Selectable marker |
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