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Biology Test 32...

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  • Question 1
    4 / -1

    A male human is heterozygous for autosomal genes A and B and is also hemizygous for haemophilic gene h. What proportion of his sperms will be abh?

  • Question 2
    4 / -1

    The genes controlling the seven pea characters studied by Mendel are now known to be located on how many different chromosomes?

  • Question 3
    4 / -1

    Down's syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?

  • Question 4
    4 / -1

    Which of the following is an example of pleiotropy?

  • Question 5
    4 / -1

    On selfing a plant of F - generation with genotype "AABbCC", the genotypic ratio in F2 -generation will be

  • Question 6
    4 / -1

    A diseased man marries a normal woman. They get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is

  • Question 7
    4 / -1

    Two nonallelic genes produces the new phenotype when present together but fail to do so independently then it is called

  • Question 8
    4 / -1

    The process of formation of mRNA is known as

  • Question 9
    4 / -1

    Which of the following represents the complementary pairs?

  • Question 10
    4 / -1

    What does " lac" refer to in the lac operon?

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