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Principles of Inheritance and Variation Test - 66

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Principles of Inheritance and Variation Test - 66
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  • Question 1
    1 / -0
    In haploids the monohybrid ratio is
    Solution
    Monohybrid ratio is defined as the phenotypic ratio of different types of offsprings (dominant and recessive) obtained in F2 generation of a monohybrid cross. In monohybrid cross experiment the phenotype ratio for F2 generation is 3:1.

    So, the correct answer is '3:1'.
  • Question 2
    1 / -0
    Who suggested for the first time that genes are located on the chromosomes?
  • Question 3
    1 / -0
    Haploids are more suitable for mutation studies because
  • Question 4
    1 / -0
    Chromosome theory of inheritance was proposed by.
    Solution
    • The chromosomal theory of inheritance was unknown in Mendel’s and Darwin’s time. It was proposed by Sutton and Boveri.
    • chromosome theory of inheritance is credited to papers by Walter Sutton in 1902 and 1903, as well as to independent work by Theodor Boveri during roughly the same period.so answer is option A.
  • Question 5
    1 / -0
    Stevens $$(1902)$$ discovered.
  • Question 6
    1 / -0
    Chromosome theory of linkage was proposed by.
  • Question 7
    1 / -0
    Same genotypic and phenotypic ratio as $$1:1$$ is found in which of the following type of cross?
  • Question 8
    1 / -0
    Which of the following is true for progenies of $$F_4$$ generation of monohybrid cross?
  • Question 9
    1 / -0
    A dihybrid plant with genotype PpNn. It produces four types of gametes in following number PN=200 , pn=200 , Pn=800 , pN=800 then what is the distance linked genes ?
    Solution

  • Question 10
    1 / -0
    With reference to sex determination in Melandrium album, consider the following statements.
    a. The Y chromosome is longer than the X chromosome.
    b. The Y chromosome and X chromosome form a heteromorphic bivalent at meiosis.
    c. It is the presence of a single Y chromosome rather than any number of X chromosomes or autosomes that give a male individual.
    Which of the statements give are correct?
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