The phenotypic ratio in the F2 generation of a dihybrid cross is
  • 1:2:2:4:1:2:1:2:1
  • 9:3:3:1
  • 7:1:1:7
  • 12:3:4
Cytoplasmic inheritance is due to (1) Mitochondria (2) Cilia (3) Cytoplasmic particles (4) Cell wall
  • 1 and 2 are correct.
  • 1 and 3 are correct.
  • 1, 2 and 3 are correct.
  • 2 and 4 are correct.
A pure tall and a pure dwarf plant were crossed to produce offspring. Offspring were self-crossed. Find out the ratio between true breeding tall to true breeding dwarf.
  • 3:1
  • 1:1
  • 2:1
  • 1:2:1
The term ‘Genetics’ was proposed by
  • Johannsen
  • Morgan
  • Mendel
  • Bateson
Genes present in the cytoplasm of eukaryotic cells are found in
  • Golgi bodies and smooth endoplasmic reticulum
  • Mitochondria and inherited via egg cytoplasm
  • Plastids and inherited via male gamete
  • Lysosomes and peroxisomes
The gene which controls many characters is called
  • Pleiotropic gene correct
  • Co-dominant gene
  • Multiple gene
  • Polygene
Heterozygous purple flower is crossed with recessive white flower. The progeny has the ratio:
  • All purple
  • All white
  • 75% purple and 25% white
  • 50% purple and 50% white
Mating of an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is called
  • Back cross
  • Dihybrid cross
  • Reciprocal cross
  • Test cross
Which of the following is not a Mendelian disorder?
  • Haemophilia
  • Turner's syndrome
  • Cystic fibrosis
  • Colour blindness
Which of the blood groups can be given to any person?
  • O correct
  • B
  • A
  • AB
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