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Biology Test 310
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Biology Test 310
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  • Question 1/10
    4 / -1

    Consider the following –

    (a) DNA ligase can join 5’ to 3’ phosphodiester linkage

    (b) Both strand of DNA of structural gene can not be transcribed

    How many is /are correct-

  • Question 2/10
    4 / -1

    If lactose is absent in medium than which is probable correct for lac operon-

    Solutions

    Small level of lac operon expression always present

     

  • Question 3/10
    4 / -1

    Down syndrome is caused due to

    Solutions

    Correct option is B. a chromosomal abnormality

     

  • Question 4/10
    4 / -1

    In a cross between AABb and AaBb , percentage of progeny with AaBb Genotype is-

    Solutions

    50 percent gamete receive Aa gametes

     

  • Question 5/10
    4 / -1

    From given example which of the following is not according to mendel law of dominance- 

    (a) endosperm of gymnosperm

    (b) aleurone layer in monocot seed

    (c) nucellus of gymnosperm

    Mark the correct answer-

    Solutions

    for mendel law of dominance factor should be in pair

     

  • Question 6/10
    4 / -1

    Law of segregation is not valid in case of –

    (a) gametogenesis in algae

    (b) sporogenesis in algae

    (c) embyrogenesis in bryophytes

    Mark the correct answer-

    Solutions

    for law of segregation meiosis should occur

     

  • Question 7/10
    4 / -1

    AaBbCc genotype form 3 type of different gamete this means –

    Solutions

    de to linkage of two genes number of gamets reduce

     

  • Question 8/10
    4 / -1

    A colour blind Man marries to normal female have one normal daughter and one colourblind son which is probability of next daughter to be colour blind-

    Solutions

    mother is carrier so every time 50 percent chance is tha daughter is colour blind

     

  • Question 9/10
    4 / -1

    If individual with genotype TtRr(tall round) is crossed with ttrr (dwarf wrinkled) than it give two type of genotype only-

    Solutions

    In complete linkage only parental type obtained

     

  • Question 10/10
    4 / -1

    Mark the incorrect-

    Solutions

    In co-dominance dominant recessive relationship is absent

     

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