CBSE  /  Class 12  /  Biology  /  Principles of Inheritance and Variation

  • 1. 
    Sucess of mendal is

  • Selection of Peaplant
  • Studied of free characters
  • More Characters selection
  • Pea is Bisexual

  • 2. 
    Loss of Melanin pigment cause for:

  • Colourblindness
  • Depigmentation
  • Phenyl Ketoneuria
  • Alkaptoneuria

  • 3. 
    Gunetical identification of male human is:

  • By Nucleus
  • By cells
  • By Autosome
  • By Sex-chromosome

  • 4. 
    Rh

  • rr
  • TT
  • Rr
  • Both (a) and (c)

  • 5. 
    Cause of chromosomal mutation:

  • Euploidy
  • Polyploidy
  • Physical effect
  • All of these

  • 6. 
    Mendal was born in:

  • 17th century
  • 18th century
  • 19th century
  • 8th century

  • 7. 
    Two genes very close on a chromosome will show:

  • No crossing over
  • High crossing over
  • Hardly an crossing over
  • Only double crossing overy

  • 8. 
    First geneticist/father of genetics was:

  • de Vries
  • Mendel
  • Darwin
  • Morgan

  • 9. 
    An lndividual with into identical alleles is:

  • Hybrid
  • Dominant
  • Homozygous
  • Heterozygous

  • 10. 
    Mendal’s law can be applicable only when:

  • Characters are linked
  • Parents are pore breed
  • F
  • Onepair of contiasting characters depends on another pair
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