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12th Standard English Medium Biology (Botany) Subject Classical Genetics Creative 1 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Biology

Time : 01:00:00 Hrs
Total Marks : 5

    1 Marks

    5 x 1 = 5
  1. Which is not a correct statement?
    (A) Variations are the raw materials for evolution
    (B) Variations provide genetic material for natural selection
    (C) It helps the individual to adapt to the changing environment
    (D) Variations allow breeders to improve the crop field

    (a)

    A and D

    (b)

    B only

    (c)

    C and D

    (d)

    none of he above

  2. Assertion (A): Codominance is an example of intragenic interaction
    Reason (R): Interaction takes place between the alleles of the same gene

    (a)

    A and R are correct R explains A

    (b)

    A and R are incorrect

    (c)

    A is correct R is incorrect

    (d)

    A is incorrect R is correct

  3. In case of co-dominance, monohybrid F 1 __________ is 1: 2: 1

    (a)

    Genotype ratio

    (b)

    Phenotype ratio

    (c)

    Both genotype & Phenotype ratio

    (d)

    Ratio is wrong

  4. 'Gametes are never hybrid' is concluded by ___________

    (a)

    Law of dominance

    (b)

    Law of segregation

    (c)

    Law of independent environment

    (d)

    Law of lethality

  5. The 1 : 2 : 1 ratio of co-dominance process Mendel's ___________

    (a)

    Law of dominance

    (b)

    Law of recessiveness

    (c)

    Law of segregation

    (d)

    Law of independent assortment

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