InterviewSolution
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InterviewSolution
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. |
In Alzheimer disease the aggregation of this happensA. PhospholipidsB. HaemoglobinC. Amyloid `beta`peptideD. Nucleic acid. |
| Answer» Correct Answer - C | |
| 2. |
Which of the follwong is suitable for experiment on linkage?A. `aaBBxxaaBB`B. `AABBxxaabb`C. `AaBbxxAaBb`D. `AAbbxxAaBB` |
| Answer» Correct Answer - B | |
| 3. |
Heterochromatin remains condensed in which part of chromosomeA. Secondary construction -IB. Secondary constrution consteuction -IIC. TelomeresD. both (a) and (b) correct |
| Answer» Correct Answer - A | |
| 4. |
Chromosomal constitution inn human femal can best be written asA. 46B. 44+2C. 44A+XYD. 44A+XY |
| Answer» Correct Answer - C | |
| 5. |
Puffs or balbiani rings in salivary gland chromsosomes are sites ofA. DNA replicationB. DNA duplicationC. RNA synthesisD. Protein synthesis |
| Answer» Correct Answer - C | |
| 6. |
In Drosophila, during organ differentiation, one organ can be replaced by another like wings by legs. Genes responsible for it are :A. Plastid gensB. Hpomeotic genesC. Complementary genesD. Supplementary genes |
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Answer» Correct Answer - B Homeotic genes control development of a region or part by producing factors that regulate gene expressions by binding to particular segments |
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| 7. |
Chromosome number of apple meiocytes isA. 24B. 380C. 34D. 20 |
| Answer» Correct Answer - C | |
| 8. |
Depending upon the distance between any two genes which is inversely proportional to the strength of linkage, cross overs will vary fromA. 50-100%B. 0-50%C. 75-100%D. 100%-150% |
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Answer» Correct Answer - B The crossing over can never exceeds above 50% it ranges from 0-50% |
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| 9. |
Chromosome number in meiocyte of housefly isA. 8B. 12C. 21D. 23 |
| Answer» Correct Answer - B | |
| 10. |
Allelic sequence variations where more than one variant (allele) at a locus in a human population with a frquency greater than `0.01` is referred to asA. Incomplete dominanceB. Multiple allelismC. SNPD. EST |
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Answer» Correct Answer - C Allellc sequence variation has traditionally been described as a DNA polymorphism if more than one variant (allele) as a locus occurs in human population with a high frequency , it is referred to as DNApolymonbises |
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| 11. |
The chromosomal number in the meiocytes of housefly is :A. 8B. 12C. 21D. 23 |
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Answer» Correct Answer - B The gametc mother cells (2n) are called meiocytes, which undergo meisosis to frm gameter (n).The chromosome number in the melocytes (2n) of housefly is 12. |
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| 12. |
XO type of sex determination is seen inA. manB. GrasshopperC. DrosophilaD. Birds |
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Answer» Correct Answer - B Grashopper is an exemple of XO type of sex determinantion in whith the males have only one X- chromosome besides the autosomes, wheress fameles have a pair of X -chromosomes. |
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| 13. |
Experimental verification of chromosomal theroy of inheritance was gtiven byA. Grego Johann MendelB. Hugo de vriesC. Langdon DownD. Henking (e) Thomas hunt morgan |
| Answer» Experlemental verification of the chromosomal theory of inheritance was given by thomas hunt morgan and his colloagnes. This led to discovering the basis for variation that sexual repreduretion produced. | |
| 14. |
Experimental verification of chromosomal theroy of inheritance was gtiven byA. HenkingB. Hugo de vriesC. Langdon DownD. Thomas Hunt Morgan |
| Answer» Correct Answer - D | |
| 15. |
Which organism was used by Beasdle and Tatum to proposed one gene one enzyme hypothesisA. Escherichia coliB. Neurospora crassaC. Salmonella typhimurumD. Diplococous pneumoniae |
| Answer» Correct Answer - B | |
| 16. |
ABO blood group is an example ofA. PseudoallelesB. IsoallelesC. Multiple allelesD. cytoplasmic inheritance |
| Answer» Correct Answer - C | |
| 17. |
When a certain character is inherited only through female parent it probably representsA. Incomplete dominanceB. cytoplasmic inheritanceC. Mendelian unclear inheritanceD. Multiple plastid inheritance |
| Answer» Correct Answer - B | |
| 18. |
The action of ultraviolet radiation in DNA to induce mutatin is the :A. deletion of base pairsB. addition of base pairsC. methylation of base pairsD. formation of thymine dimers |
| Answer» Correct Answer - D | |
| 19. |
Which one can induce plolyploidy?A. ColchicineB. AcridinesC. EthyleneD. Maleic hydrazide |
| Answer» Correct Answer - A | |
| 20. |
Presence of one Barr body in WBC iondicates theat the person isA. Colour blind normal maleB. Normal femalC. HaemophiliacD. |
| Answer» Correct Answer - C | |
| 21. |
The chemical and physical factors that induce mutations are called asA. VariantsB. mutagensC. RecombinantD. Alternatives |
| Answer» Correct Answer - B | |
| 22. |
An agent that proomotes occurrence of mutation is calledA. CarcinogenB. MutagenC. MutonD. Both B and C |
| Answer» Correct Answer - B | |
| 23. |
Mutations can be brought about theat promotes the occurrenece of mutation is called:A. DDTB. X-raysC. AuxinsD. Aniline dyes |
| Answer» Correct Answer - B | |
| 24. |
Any physical or chemical agent that promotes the occurreneceA. MutagenB. carcinogenC. both (a ) and (b) corectD. none of these |
| Answer» Correct Answer - A | |
| 25. |
A strong mutagenis :A. ColdB. HeatC. WaterD. X-rays |
| Answer» Correct Answer - D | |
| 26. |
Which one of the following is not a mutagenA. `gamma`-raysB. Acetic acidC. Nitrous acidD. Hydroxylamine |
| Answer» Correct Answer - B | |
| 27. |
Genes not locted within the nuleus are almost always found in :A. cytosolB. ribosomeC. cytoskeletonD. cell membrane |
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Answer» Correct Answer - A Because cytosol contains organlles like cloroplasts and mitrochondria having DNA . |
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| 28. |
Name the mutagen:A. `NH_(3)`B. `CO`C. `NHO_(2)`D. `SO_(2)` |
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Answer» Correct Answer - C Nitrous acid cause transitionsal mutation due to oxidataive deminataion of cytosine to uracil and adenine to hypoxanthine |
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| 29. |
what base is responsible for hot sports for spontaneous point mutaions ?A. AdenineB. GuanineC. 5-BromouracilD. 5- methylcyosine |
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Answer» Correct Answer - D Hostspot is any region in a gene that mutates at very higher frequencies than neighboring regions of the same gene . |
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| 30. |
which of the following is a base analogue ?A. CaffeineB. Nitrous acidC. ColchcineD. 5- Bromonuracil |
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Answer» Correct Answer - D Base analoues are certain substance having molecular structure simlar to usual DNA bases . |
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| 31. |
A sex linked trait/disease isA. Colour blindness/haemophiliaB. Night blindness/albinismC. Myxiedema/beri-beriD. Deafness/tylosis |
| Answer» Correct Answer - A | |
| 32. |
Genes for colour blindeness /sex linked traits are located onA. X-chromosomeB. Y-chromosomeC. X-or Y chromosomeD. Both X and Y chromosomes |
| Answer» Correct Answer - A | |
| 33. |
Which of the following is a base analogue ?A. 5-BromouracilB. CaffeineC. ColchincineD. Nitrous acid |
| Answer» Correct Answer - A | |
| 34. |
Monosomics are:A. 2n-1B. nC. 2n+1D. 2n-2 |
| Answer» Correct Answer - A | |
| 35. |
A duble monosonmic is correctly represented as:A. 2n-2B. 2n-1-1C. 2n+2D. 2n+1+1 |
| Answer» Correct Answer - B | |
| 36. |
Trisomy has chromosome complement ofA. 2n-1B. 2n-1-1C. 2n+1+1D. 2n+1 |
| Answer» Correct Answer - D | |
| 37. |
A polyploid derved from `F_(1)` hybrid between two species is :A. autoodiploidB. hexaploidC. autopolyploidD. amphdioid |
| Answer» Correct Answer - D | |
| 38. |
Haploid chromosome numbe of onion is 8 , what will be its monosomic number ?A. 15B. 16C. 17D. 32 |
| Answer» Correct Answer - A | |
| 39. |
If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosomic isA. 25B. 23C. 22D. 26 |
| Answer» Correct Answer - B | |
| 40. |
A cell in the body of a man with 92 chromomes willl be termed :A. haploidB. triploidC. diploidD. tetraploid |
| Answer» Correct Answer - D | |
| 41. |
Monosic trisomy is represented byA. 2n-1B. 2n+1C. 2n-1-1D. 2n-1+1 |
| Answer» Correct Answer - C | |
| 42. |
A monosomic organism can best be representedA. 2n+1B. 2n+2C. n+1D. 2n-1 |
| Answer» Correct Answer - D | |
| 43. |
Haploid chromosomes number of rice (oryza ) is 12 what willl be its tetrassomoc number ?A. 14B. 28C. 26D. 48 |
| Answer» Correct Answer - C | |
| 44. |
What term is appied to the gene mutation wher a base is replaced by another base?A. DuplicationB. AneuploidyC. EuploidyD. Substitution |
| Answer» Correct Answer - D | |
| 45. |
Which one contains haploid set of chromosomesA. SpermatogoniumB. Primary spermatocyteC. secondary spermatocyteD. primordial germ cell |
| Answer» Correct Answer - C | |
| 46. |
The term mutation was given byA. De vriesB. MendelC. DarwinD. Lamarck |
| Answer» Correct Answer - A | |
| 47. |
Number of chromosomes in Geometrid Moth isA. 224B. 250C. 78D. 48 |
| Answer» Correct Answer - A | |
| 48. |
the gene not expressing any protein is knows as:A. PseudogeneB. epistic geneC. hypostatic geneD. none of these |
| Answer» Correct Answer - C | |
| 49. |
the first gene expressing to be synthesized by khorana and other in 1970 was:A. an oncogeneB. `beta`-globin geneC. alanylt-RNA geneD. Lactose operon gene |
| Answer» Correct Answer - A | |
| 50. |
Genes that change their lockation on chromosome areA. split genesB. Duplicate genesC. Jumpling genesD. Pleitropic gense |
| Answer» Correct Answer - C | |