PYQSide ExamsMy practice

Molecular Basis of Inheritance · Question 63

NEET (UG) 2019MCQEasy📈 Topic in 25% papers+4−1
1

Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?

  1. Genetic code is nearly universal
  2. Genetic code is specific
  3. Genetic code is not ambiguous
  4. Genetic code is redundant

Answer

(1) Genetic code is nearly universal

Solution

As per NCERT, the genetic code is nearly universal: from bacteria to human, UUU would code for phenylalanine (with some exceptions in mitochondrial codons and some protozoans).

A human insulin gene inserted into a bacterium is read by the bacterial machinery with the same code and yields the same human polypeptide.

Answer: (1)

NEET (UG) 2019

Keep practising — Molecular Basis of Inheritance

2

Match the following genes of the Lac operon with their respective products : Select the correct option.

  1. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
  2. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
  3. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
  4. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
NEET (UG) 2019
3

The experimental proof for semi-conservative replication of DNA was first shown in a

  1. fungus
  2. bacterium
  3. plant
  4. virus
NEET 2018
4

Select the correct match :

  1. Alec Jeffreys - Streptococcus pneumoniae
  2. Alfred Hershey and Martha Chase - TMV
  3. Matthew Meselson and F. Stahl - Pisum sativum
  4. Francois Jacob and Jacques Monod - Lac operon
NEET 2018
5

Select the correct match :

  1. Ribozyme - Nucleic acid
  2. F2 Recessive parent - Dihybrid cross
  3. T.H. Morgan - Transduction
  4. G. Mendel - Transformation
NEET 2018
6

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

  1. polysome
  2. polyhedral bodies
  3. plastidome
  4. nucleosome
NEET 2018
7

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?

  1. AGGUAUCGCAU
  2. UGGTUTCGCAT
  3. ACCUAUGCGAU
  4. UCCAUAGCGUA
NEET 2018
8

All of the following are part of an operon except

  1. an operator
  2. structural genes
  3. an enhancer
  4. a promoter
NEET 2018
9

The final proof for DNA as the genetic material came from the experiments of

  1. Griffith
  2. Hargobind Khorana
  3. Avery, MacLeod and McCarty
  4. Hershey and Chase
NEET 2017
10

If there are 999 bases in an RNA that codes 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. 333
  4. 33
NEET 2017
11

During DNA replication, Okazaki fragments are used to elongate

  1. The leading strand away from replication fork
  2. The lagging strand towards replication fork
  3. The lagging strand away from the replication fork
  4. The leading strand towards replication fork
NEET 2017

All Molecular Basis of Inheritance PYQs →

PDFDownload Molecular Basis of Inheritance PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Botany chapters
Class 11The Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisionTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and Development
Class 12Reproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental Issues
Other chaptersBiomolecules (Biology)