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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
DNA fragments generated by restriction endonucleases in a chemical reaction can be separated byA. Restriction mappingB. CentrifugationC. Polymerase chain reactioD. Electrophoresis |
| Answer» Correct Answer - D | |
| 2. |
Assertion :- Mutation play key role in the process of evolution. Reaosn : Mutation can change the genotypic consituent.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 3. |
Rate of mutation is affected byA. temperatureB. X-raysC. gamma and beta radiationsD. all of these |
| Answer» Correct Answer - D | |
| 4. |
Chromosome number 2n-1 is an example ofA. trisomyB. euploidyC. polyploidyD. monosomy |
| Answer» Correct Answer - D | |
| 5. |
A mutant micro-organism unable to synthesize a compound required for it growth but able to grow if the compound is provided, is known asA. AuxotropyB. PrototropyC. AutotropyD. None of these |
| Answer» Correct Answer - A | |
| 6. |
Assertion :- HGP was closely associated with the rapid development of a new area in biology called as Bioinfomatics. Reason : The enormons amount of data generated in HGP necessitated the use of high speed computationsl divices for data storage & analyis.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 7. |
Barr body is associated with:A. sex chromosome of femaleB. sex chromosome of maleC. autosome of femaleD. autosome of male |
| Answer» Correct Answer - A | |
| 8. |
In cells of superfemale with 47 chromosomes (44 + xxx) visible barr bodies are :-A. 1B. 0C. 2D. 3 |
| Answer» Correct Answer - C | |
| 9. |
Coupling and repulsion theory of linkage was given byA. MorganB. BatesonC. MuilerD. De vries |
| Answer» Correct Answer - B | |
| 10. |
If there were only parental combinations in `F_(2)` of a dihybrid cross then Mendel might have discovered :-A. Independent assortmentB. AtavismC. LinkageD. Repulsion |
| Answer» Correct Answer - C | |
| 11. |
Assertion :- UGG is a chain termination codon. Reason : It does not code any amino acid.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - D | |
| 12. |
Assertion :- There occur 64 codons iin dictionary of genetic code Reason : genetic code is quadrapleteA. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - C | |
| 13. |
Assertion :- TAC is anticodon of AUG codon. Reason : Codon and anticodon are non-complementary to each other.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - D | |
| 14. |
Experimental verification of chromosomal theroy of inheritance was gtiven byA. BoveriB. SuttonC. T.H. MorganD. Bateson |
| Answer» Correct Answer - D | |
| 15. |
Experimental verification of the chromosomal theory of inheritance done by Thomas Hunt Morgan and his colleagues they worked with-A. Pea plantB. Sweet pea plantC. SnapdragonD. Drosophila |
| Answer» Correct Answer - D | |
| 16. |
One turn of the helix in a B- from DNA is approximatelyA. 20 nmB. `0.34` nmC. `3.4` nmD. 2 nm |
| Answer» Correct Answer - C | |
| 17. |
One-gene-one enzyme hypothesis was proposed by :-A. R. FranklinB. Hershey and ChaseC. A. GarrodD. Beadle and Tatum |
| Answer» Correct Answer - D | |
| 18. |
One-gene-one enzyme hypothesis was proposed by :-A. Beadle and TatumB. Jacob and MonodC. LederbergD. Watson and Crick |
| Answer» Correct Answer - A | |
| 19. |
Anticodons are found in :-A. m RNAB. t RNAC. r RNAD. In all |
| Answer» Correct Answer - B | |
| 20. |
Out of 64 codons , 61 codons code for 20 types of amino acid. It is calledA. DegeneracyB. Non ambiguous natureC. RedundancyD. Overlapping |
| Answer» Correct Answer - A | |
| 21. |
Assertion :- Repeated sequence make up very large portion of the human genome. Reason: They have no direct coding functions but useful in study of chromsome structure. Dynamics & evolution.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - B | |
| 22. |
Assertion :- For sequencing, the total DNA from a cell is isolated and converted into random fragments. Reason : DNA is a long polymer & there are technical limitations in sequencing very ling pices of DNA.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 23. |
On which plant mendel had carried out his investigations :-A. Garden-peaB. Wild-peaC. Cow-peaD. Pigeon pea |
| Answer» Correct Answer - A | |
| 24. |
Fill the gap in following statement Human genome have approximately __________ and the cost of sequencing was________per base pair.A. `4xx10^(9)bp,` billion US dollarsB. 9 billion US dollars, 4xx19^(90` bpC. `3xx10^(9)`bp, 3 US dollarsD. `4.7` mullion bp, 9 billion US dollars |
| Answer» Correct Answer - C | |
| 25. |
Parents are carrier for albinism. What will be the first three children :-A. Some normal, hetrozygous & albinoB. All normalC. All heterozygous albinoD. No normal |
| Answer» Correct Answer - A | |
| 26. |
Which of the following bond is not related to nucleic acid :A. H-bondB. Ester bondC. Glycosidic bondD. Peptide bond |
| Answer» Correct Answer - D | |
| 27. |
Polysome is formed byA. A riborsome with several subunitsB. Ribosomes attached to each other in a linear arrangementC. Several ribosomes attahed to a single mRNAD. Many ribosomes attached to a strand of endoplasmic reticulum |
| Answer» Correct Answer - C | |
| 28. |
The total number of nitrogenous bases in human genome is estimated to be aboutA. `3.5` millionB. 35 thousandC. 35 millionD. `3.1` billion. |
| Answer» Correct Answer - D | |
| 29. |
Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid ?A. AUG, ACG - Start/MethionineB. UUA, UCA - LeucineC. GUU, CUG - AlanineD. UAG, UGA - Stop |
| Answer» Correct Answer - D | |
| 30. |
Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against itA. Guanine, Adenin- PurinesB. Adenine, Thymine - PurinesC. Thymine, Uracil - PyrimidinesD. Uracil, Cytosine - Pyrimidines |
| Answer» Correct Answer - B | |
| 31. |
The weight of fruit in a plant is determined by the number of dominant alleles of a certain number of genes. If seven weight categories are noticed , how many gene sites would be invlved?A. twoB. threeC. fourD. five |
| Answer» Correct Answer - B | |
| 32. |
Transcription unit in DNA is -A. PromoteB. Structural geneC. TerminatorD. All |
| Answer» Correct Answer - D | |
| 33. |
Correct order of molecular weight is :-A. DNA `lt` r-RNA `lt` t-RNAB. DNA `lt` m-RNA `lt` r-RNAC. t-RNA `lt` m-RNA `lt` DNAD. t-RNA `lt` DNA `lt` m-RNA |
| Answer» Correct Answer - C | |
| 34. |
Transcription of DNA is aided byA. RNA polymeraseB. DNA polymeraseC. Exo nucleaseD. Recombinase |
| Answer» Correct Answer - B | |
| 35. |
Which one of the following conditions though harmful in itself ,is also a potential saviour from a mosqutio borne infectious disease?A. ThalaessaemiaB. Sickle cell anaemiaC. Pernicius anaemiaD. Luckemia |
| Answer» Correct Answer - B | |
| 36. |
Which on the four couples chaiming tha baby with O+ blood type are possible the biological parents of it ?A. `AB^(-)and A^(+)`B. `A^(+)and O^(-)`C. `O^(+)and AB^(+)`D. `B^(-)and O^(-)` |
| Answer» Correct Answer - B | |
| 37. |
Assertion :- Addressing the ELSI, in one of the goal of HGP. Reason : the HGP was a 13 year long project & was completed in 2003.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - B | |
| 38. |
Assertion :- Many non-human model organisms have also been sequenced in HGP. Reason : Their sequences can be applied towards solving challenges in health care, agriculature, energy production etc.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 39. |
Prokaryotic genetic system contains-A. DNA & histonesB. RNA & histonesC. Either DNA or histonesD. DNA but no histones |
| Answer» Correct Answer - D | |
| 40. |
Prokaryotic DNA is `:`A. double stranded roundB. single stranded roundC. double stranded straightD. double stranded RNA as uncleic acid |
| Answer» Correct Answer - A | |
| 41. |
Short DNA segment has 80 thymine and 90 fuanine bases. The total number of nucleotides areA. 160B. 40C. 80D. 340 |
| Answer» Correct Answer - D | |
| 42. |
DNA strands are antiparallel because of the presence of `:`A. H-bondsB. Phosphate diester-bondsC. Di-sulphide-bondsD. Phosphate-bonds |
| Answer» Correct Answer - D | |
| 43. |
The salient feature of DNA are - (i) It is made of two polynucleotide chain (ii) Back bone is constituted by sugar and nitrogen base (iii) Two chain hacve parallel polarity (iv) Bases in two strands are paired through H-bonds (v) The two chain are coiled in a left handed fashionA. I, iv, vB. I, ivC. I, ii, vD. I, ii, iii, iv, v |
| Answer» Correct Answer - B | |
| 44. |
Assertion: Dominance is not an autonomous feature of a gene or the product that is has information for. Reason : Dominance depends much on the gene product and the production of a particular phenotype from this product.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - A | |
| 45. |
Assertion :- The presence of introne is reminisecent of antiquity & the process of splicing represents the dominance of RNA world. Reason : The splitt gene arrangement represents an advanced feature of the genome.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.C. If Assertion is True but the Reason is Flase.D. If both Assertion & Reason are false. |
| Answer» Correct Answer - C | |
| 46. |
Epistasis differs from dominance becauseA. In epistasis one gene pair mask the espression of another pair of genesB. Epistasis is an allelic interactionC. Many genes collectively controls a particular phenotypeD. One gene pair independently controls a particular phenotype |
| Answer» Correct Answer - A | |
| 47. |
In a genetic cross having recessive epistasis, `"F"_(2)` phenotypic ratio would be:A. `9:6:1`B. `15:1`C. `9:3:4`D. `12:3:1` |
| Answer» Correct Answer - C | |
| 48. |
When a red floweered plant was cross pollinated by white flowered one and the offspring were self pollinated to obtain a phenotypic ratio of `1:2:1` it has to be a case of :-A. Incomplete domininceB. DominanceC. Recessive epistasisD. Pleurotropic effect of genes |
| Answer» Correct Answer - A | |
| 49. |
When two hybrids of rrTt and Rrtt are crossed, the phenotypic ratio of offspring shall be:A. `3:1`B. `1:1:1:1`C. `1:1`D. `9:3:3:1` |
| Answer» Correct Answer - B | |
| 50. |
Mode of DNA replication in E. coli is :-A. Conservative and unidirectionalB. Semi conservative and unidirectionalC. conservative and bidirectionalD. Semi conservative and bidirectional |
| Answer» Correct Answer - D | |