NEET MCQs Inheritance and Variation [Free PDF Download]

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NEET MCQs Inheritance and Variation

NEET MCQs Inheritance and Variation – Sample

  1. A haemophilic woman marries a normal man, then
    a) All the children will be normal b) All the sons will be haemophilic
    c) All the girls will be haemophilic d) Half girls will be haemophilic
  2. Disorder inherited as Mendel’s law of inheritance called
    a) Mendelian disorder b) Chromosomal disorder
    c) Maternal inheritance d) Polygenic inheritance
  3. The term ‘gene’ was coined by
    a) Avery b) Bateson c) Johanssen d) Mendel
  4. The phenotypic ratio in the 𝐹2 gereration of dihybrid cross, is
    a) 9 : 3 : 3 : 1 b) 1 : 2 : 2 : 4 : 1 : 2 : 1 : 2 : 1
    c) 7 : 1 : 1 : 7 d) 12 : 8 : 4
  5. Chromosome is made up of
    a) DNA +pectin b) RNA +DNA c) DNA +histone d) Only histone
  6. Select the incorrect statemant from the following.
    a) Linkage is an exception to the principle of
    independent assortment in heredity
    b) Galactosemia is an inborn error of metabolism
    c) Small population size result in random genetic
    drift in a population
    d) Baldness is a sex-limited trait
  7. A pure tall and a pure dwarf plant were crossed to produced offsprings. Offsprings were self crossed, then
    find out the ratio between true breeding tall to true breeding dwarf?
    a) 1 : 1 b) 3 : 1 c) 2 : 1 d) 1 : 2 : 1
  8. Exposure of X-rays enhances the frequency of
    a) Linkage b) Crossing over
    c) Pairing of chromosome d) Segregation
  9. A self-fertilizing trihybrid plant forms
    a) 8 different gametes and 64 different zygotes b) 4 different gametes and 16 different zygotes
    c) 8 different gametes and 16 different zygotes d) 8 different gametes and 32 different zygotes
  10. Genotype is the
    a) Genetic constitution b) Genetic constitution of the phenotype
    c) Trait expressed d) Expressed genes
  11. Failure of cytokinesis after …A… stage of cell division results in an increase in a whole set of chromosomes
    in an organism called …B…
    a) A-prophase, B-polyploidy b) A-metaphase, B-polyploidy
    c) A-anaphase, B-polyploidy d) A-telophase, B-polyploidy
  12. In previous question find out total seeds (plants) having round seed texture
    a) 12 b) 10 c) 9 d) 11
  13. The ratio 1 : 1 : 1 : 1 is obtained from a cross between the parents
    a) RRYY×rryy b) RRYY×rryy c) RRYY×Rryy d) RrYy×rryy
  14. Which of the following terms represent a pair of contrasting characters?
    a) Homozygous b) Heterozygous c) Allelomorphs d) Codominant genes

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