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Principles of Inheritance and Variation BIOLOGY - Principles of Inheritance and Variation

Rajasthan Board (RBSE) - STD 12 Science - BIOLOGY (Rajasthan - English Medium). 111 questions in this chapter.

Question types

Principles of Inheritance and Variation question types

111 questions across 6 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.

111
Questions
6
Question groups
5
Question types
Sample Questions

Principles of Inheritance and Variation questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 2M.C.Q (0.5 Marks)1 Mark
The law of independent assortment is proved by:
  • A
    All progeny of F₁-generation are long plants in 3:1.
  • B
    Appearance of tall and dwarf
  • ✓
    Appearance of smooth and wrinkled seeds in F, 2 generation
  • D
    Appearance of tall and dwarf plants in F generation

Answer: C.

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Q 3M.C.Q (0.5 Marks)1 Mark
In polygenic inheritance, the example of effect of environment is:
  • ✓
    Human skin colour
  • B
    Down's syndrome
  • C
    Phenylketonuria
  • D
    Klienfelter syndrome

Answer: A.

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Q 171.5 Marks Questions2 Marks
Two heterozygous parents are crossed. If two loci are linked what would be the distrubution of phenotypic features in F1 generation for a dihybrid cross.
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Q 233 Marks Question3 Marks
When a cross is made between tall plant with yellow seeds (TtYy) and tall plant with green seeds (Ttyy), what proportions of phenotypes in the offsprings could be expected to be:
(i) tall and green
(ii) dwarf and green
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Q 264 Marks Questions4 Marks
Using a Punnett Square, workout the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.
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Q 304 Marks Questions4 Marks
A child has blood group 'O'. If the father has blood group A and mother blood group B, work out the genotypes of the parents and the possible genotypes of the other offsprings.
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