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Latest RSSB Teaching Associate Genetics and Plant Breeding Exam Question (Objective Questions), MCQ in English

Subjects : Subject Concerned (Genetics and Plant Breeding)

Question Bank RSSB Teaching Associate (Genetics and Plant Breeding) Exam Paper 2 - English
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Subject Concerned (Genetics and Plant Breeding)

Question 1Single Answer
Cell theory was proposed by?
  1. A
    Schleiden and Schwann
  2. B
    Mendel
  3. C
    Watson and Crick
  4. D
    Morgan
Question 2Single Answer
Mitosis results in?
  1. A
    Four haploid cells
  2. B
    Four diploid cells
  3. C
    One diploid cell
  4. D
    Two diploid cells
Question 3Single Answer
Meiosis reduces chromosome number from?
  1. A
    n to 2n
  2. B
    2n to 4n
  3. C
    n to n
  4. D
    2n to n
Question 4Single Answer
Crossing over occurs during?
  1. A
    Leptotene
  2. B
    Zygotene
  3. C
    Pachytene
  4. D
    Diplotene
Question 5Single Answer
Synapsis occurs during?
  1. A
    Leptotene
  2. B
    Diakinesis
  3. C
    Pachytene
  4. D
    Zygotene
Question 6Single Answer
Mendel conducted experiments on?
  1. A
    Pea
  2. B
    Wheat
  3. C
    Maize
  4. D
    Rice
Question 7Single Answer
Law of segregation is also called?
  1. A
    Law of linkage
  2. B
    Second law of Mendel
  3. C
    Third law of Mendel
  4. D
    First law of Mendel
Question 8Single Answer
Monohybrid phenotypic ratio is?
  1. A
    1:2:1
  2. B
    1:1
  3. C
    9:3:3:1
  4. D
    3:1
Question 9Single Answer
Dihybrid phenotypic ratio is?
  1. A
    9:3:3:1
  2. B
    1:2:1
  3. C
    3:1
  4. D
    15:1
Question 10Single Answer
Incomplete dominance shows F2 ratio of?
  1. A
    3:1
  2. B
    15:1
  3. C
    9:3:3:1
  4. D
    1:2:1
Question 11Single Answer
Example of incomplete dominance is?
  1. A
    Pea seed shape
  2. B
    ABO blood group
  3. C
    Snapdragon flower color
  4. D
    Mouse coat color
Question 12Single Answer
Codominance is exhibited by?
  1. A
    ABO blood group
  2. B
    Pea plant height
  3. C
    Seed shape
  4. D
    Flower position
Question 13Single Answer
Complementary gene action gives ratio?
  1. A
    12:3:1
  2. B
    9:7
  3. C
    15:1
  4. D
    13:3
Question 14Single Answer
Dominant epistasis gives ratio?
  1. A
    9:7
  2. B
    9:3:4
  3. C
    15:1
  4. D
    12:3:1
Question 15Single Answer
Recessive epistasis gives ratio?
  1. A
    9:3:4
  2. B
    15:1
  3. C
    12:3:1
  4. D
    13:3
Question 16Single Answer
Duplicate dominant gene action gives ratio?
  1. A
    13:3
  2. B
    9:7
  3. C
    15:1
  4. D
    12:3:1
Question 17Single Answer
Unit of heredity is?
  1. A
    Chromosome
  2. B
    Nucleolus
  3. C
    Nucleus
  4. D
    Gene
Question 18Single Answer
Alternative forms of a gene are?
  1. A
    Chromatids
  2. B
    Alleles
  3. C
    Centromeres
  4. D
    Histones
Question 19Single Answer
Position of gene on chromosome is called?
  1. A
    Operon
  2. B
    Locus
  3. C
    Codon
  4. D
    Replicon
Question 20Single Answer
Fine structure of gene was proposed by?
  1. A
    Morgan
  2. B
    Mendel
  3. C
    Benzer
  4. D
    Darwin
Question 21Single Answer
Functional unit of gene is?
  1. A
    Recon
  2. B
    Cistron
  3. C
    Muton
  4. D
    Operon
Question 22Single Answer
Smallest unit of recombination is?
  1. A
    Recon
  2. B
    Muton
  3. C
    Cistron
  4. D
    Operon
Question 23Single Answer
Smallest unit of mutation is?
  1. A
    Recon
  2. B
    Muton
  3. C
    Cistron
  4. D
    Gene
Question 24Single Answer
Extra chromosomal inheritance is mainly associated with?
  1. A
    Nucleus
  2. B
    Golgi body
  3. C
    Ribosome
  4. D
    Mitochondria
Question 25Single Answer
Maternal inheritance is commonly observed in?
  1. A
    Y-linked genes
  2. B
    Nuclear genes
  3. C
    Cytoplasmic genes
  4. D
    X-linked genes
Question 26Single Answer
DNA is composed of?
  1. A
    Nucleotides
  2. B
    Amino acids
  3. C
    Fatty acids
  4. D
    Monosaccharides
Question 27Single Answer
DNA double helix model was proposed by?
  1. A
    Sutton and Boveri
  2. B
    Mendel and Morgan
  3. C
    Darwin and Wallace
  4. D
    Watson and Crick
Question 28Single Answer
DNA strands are?
  1. A
    Antiparallel
  2. B
    Parallel
  3. C
    Circular only
  4. D
    Linear only
Question 29Single Answer
Nitrogenous base not found in DNA is?
  1. A
    Adenine
  2. B
    Guanine
  3. C
    Cytosine
  4. D
    Uracil
Question 30Single Answer
Complementary base pairing between A and T involves?
  1. A
    One hydrogen bond
  2. B
    Two hydrogen bonds
  3. C
    Three hydrogen bonds
  4. D
    Four hydrogen bonds
Question 31Single Answer
Complementary base pairing between G and C involves?
  1. A
    Three hydrogen bonds
  2. B
    Two hydrogen bonds
  3. C
    One hydrogen bond
  4. D
    Four hydrogen bonds
Question 32Single Answer
DNA replication is?
  1. A
    Semiconservative
  2. B
    Conservative
  3. C
    Dispersive
  4. D
    Random
Question 33Single Answer
Meselson and Stahl demonstrated?
  1. A
    Mutation
  2. B
    Transcription
  3. C
    Translation
  4. D
    Semiconservative replication
Question 34Single Answer
Enzyme that unwinds DNA is?
  1. A
    Ligase
  2. B
    Primase
  3. C
    Helicase
  4. D
    Polymerase I
Question 35Single Answer
DNA polymerase synthesizes DNA in?
  1. A
    3′→5′ direction
  2. B
    Both directions
  3. C
    5′→3′ direction
  4. D
    Random direction
Question 36Single Answer
DNA repair removes damaged nucleotides mainly through?
  1. A
    Transduction
  2. B
    Translation
  3. C
    Excision repair
  4. D
    Conjugation
Question 37Single Answer
Genetic code is?
  1. A
    Degenerate
  2. B
    Ambiguous
  3. C
    Overlapping only
  4. D
    Species specific
Question 38Single Answer
Genetic code consists of?
  1. A
    Triplets
  2. B
    Duplets
  3. C
    Quadruplets
  4. D
    Quintuplets
Question 39Single Answer
AUG is the codon for?
  1. A
    Stop signal
  2. B
    Methionine
  3. C
    Glycine
  4. D
    Lysine
Question 40Single Answer
Number of stop codons is?
  1. A
    3
  2. B
    2
  3. C
    1
  4. D
    4
Question 41Single Answer
UAA, UAG and UGA are?
  1. A
    Start codons
  2. B
    Sense codons
  3. C
    Stop codons
  4. D
    Initiator codons
Question 42Single Answer
One gene-one enzyme hypothesis was proposed by?
  1. A
    Benzer and Muller
  2. B
    Watson and Crick
  3. C
    Morgan and Bridges
  4. D
    Beadle and Tatum
Question 43Single Answer
Transcription is synthesis of?
  1. A
    RNA from DNA
  2. B
    DNA from RNA
  3. C
    Protein from RNA
  4. D
    DNA from protein
Question 44Single Answer
Translation occurs on?
  1. A
    Nucleus
  2. B
    Ribosomes
  3. C
    Golgi body
  4. D
    Lysosomes
Question 45Single Answer
mRNA carries information from?
  1. A
    Ribosome to nucleus
  2. B
    Cytoplasm to nucleus
  3. C
    DNA to ribosome
  4. D
    tRNA to DNA
Question 46Single Answer
tRNA functions in?
  1. A
    DNA replication
  2. B
    Mutation
  3. C
    Cell division
  4. D
    Protein synthesis
Question 47Single Answer
Anticodon is present on?
  1. A
    mRNA
  2. B
    DNA
  3. C
    rRNA
  4. D
    tRNA
Question 48Single Answer
rRNA is a major component of?
  1. A
    Ribosome
  2. B
    Chromosome
  3. C
    Nucleosome
  4. D
    Centrosome
Question 49Single Answer
Central dogma was proposed by?
  1. A
    Mendel
  2. B
    Morgan
  3. C
    Darwin
  4. D
    Crick
Question 50Single Answer
Flow of genetic information in central dogma is?
  1. A
    Protein→RNA→DNA
  2. B
    DNA→Protein→RNA
  3. C
    RNA→DNA→Protein
  4. D
    DNA→RNA→Protein
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