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Genetics MCQ

87 MCQ questions with answers and explanations · page 2 of 4

Test yourself▶ 25 question test▶ 50 question test

Q26. Artificial gene synthesis was first done in laboratory by-

  1. AMillar
  2. BKhurana
  3. CD. Veries
  4. DKelvin
Show answer & explanation

Answer: B) Khurana

Q27. Transmission of characters from one generation to next is called-

  1. AEvolution
  2. BHeredity
  3. CGenetics
  4. DMutation
Show answer & explanation

Answer: B) Heredity

Q28. Double helix model of DNA is given by-

  1. ALecuwenhoek
  2. BSalach
  3. CWatson and Crick
  4. DDalton
Show answer & explanation

Answer: C) Watson and Crick

Q29. Heredirty characters of parent is transferred to their offspring by-

  1. ABlood
  2. BHarmone
  3. CChromosomes
  4. DNone of these
Show answer & explanation

Answer: C) Chromosomes

Q30. All offspring of a parents are not similar due to

  1. AVariation
  2. BVariation in environment
  3. CBoth a and b
  4. DNone of these
Show answer & explanation

Answer: A) Variation

Q31. Deploid number of chromosome in man is-

  1. A23
  2. B24
  3. C46
  4. DIndefinite number
Show answer & explanation

Answer: A) 23

Q32. Which number of the following Genetically Modified vegetable is recently being made available in Indian market ?

  1. ACarrot
  2. BRadish
  3. CBrinjal
  4. DPotato
Show answer & explanation

Answer: C) Brinjal

Q33. Who is responsible for the sex determination of a child-

  1. AFather
  2. BMother
  3. CBoth mother and father
  4. DNone of these
Show answer & explanation

Answer: A) Father

Q34. Number of autosomes in human sperm-

  1. A20 pairs
  2. B21 pairs
  3. C22 pairs
  4. D23 pairs
Show answer & explanation

Answer: C) 22 pairs

Q35. Which of the following traits is NOT a part of Mendel's seven contrasting traits in Green pea ?

  1. AYellow and green colour of seed
  2. BTall and dwarf height of the Pea plant
  3. CSmooth and rough stem
  4. DTerminal and axial flower
Show answer & explanation

Answer: C) Smooth and rough stem

Q36. Which one of following is a sex linked disease ?

  1. ALeprosy
  2. BTuberculosis
  3. CColour blindness
  4. DLeukamea
Show answer & explanation

Answer: C) Colour blindness

Q37. A colour blind person cannot distinguish-

  1. ABlack and yellow
  2. BRed and green
  3. CYellow and white
  4. DGreen and blur
Show answer & explanation

Answer: B) Red and green

Q38. Colour-blindness is related with a defect in-

  1. ARod cells
  2. BCone cells
  3. CEye muscles
  4. DAll of these
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Answer: B) Cone cells

Q39. For a colour blind person red colour appear as-

  1. AYellow
  2. BBlue
  3. CGreen
  4. DVoilet
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Answer: C) Green

Q40. A colour blind person marry with a normal women. Blindness is produced in their-

  1. ASon
  2. BDaughter
  3. CSon of their son
  4. DDaughter of their daughter
Show answer & explanation

Answer: D) Daughter of their daughter

Q41. The number of hydrogen bonds between guanine and cytosine in DNA is-

  1. A4
  2. B1
  3. C3
  4. D2
Show answer & explanation

Answer: C) 3

Q42. Daughter born to hemophiliac father and normal mother could be-

  1. ANormal
  2. BCarrier
  3. CHemophiliac
  4. DAll of these
Show answer & explanation

Answer: B) Carrier

Q43. Genes located on mitochondrial DNA-

  1. AGenerally show maternal inheritance
  2. BAre always inherited from male parent
  3. CShow hipa rental inheritance
  4. DAre not inherited like the nuclear gene
Show answer & explanation

Answer: A) Generally show maternal inheritance

Q44. Haemophilia is due to-

  1. ADominant autosomal genes
  2. BRecessive autosomal genes
  3. CRecessive sex linked genes
  4. DDominant sex linked gene
Show answer & explanation

Answer: C) Recessive sex linked genes

Q45. Nucleoside is-

  1. ANitrogenous base + Suger
  2. BNitrogenous base + Sugar + Phosphate
  3. CSugar + Phosphate
  4. DNitrogenous base + Phosphate
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Answer: A) Nitrogenous base + Suger

Q46. Synthesis of DNA is called-

  1. AReplication
  2. BTranscription
  3. CTermination
  4. DAmination
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Answer: A) Replication

Q47. Genetic code is a-

  1. ASinglet
  2. BDoublet
  3. CTriplet
  4. DNone of these
Show answer & explanation

Answer: C) Triplet

Q48. Experimental evidence to show that the genetic code is

  1. AGeorge Gamow
  2. BWatson & Crick
  3. CNirenberg and Matthaei
  4. DNone of these
Show answer & explanation

Answer: C) Nirenberg and Matthaei

Q49. In genetic dictionary there are 64 codons as-

  1. A64 amino acids are to be coded
  2. B64 types of t RNA are present
  3. CThere 44 nonsense codons and 20 sense codons
  4. DGenetic code is triplet
Show answer & explanation

Answer: D) Genetic code is triplet

Q50. The process of transfer of genetic information from DNA to RNA or formation of RNA from DNA is-

  1. ATransversion
  2. BTranscription
  3. CTranslation
  4. DTranslocation
Show answer & explanation

Answer: B) Transcription

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