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Biology Test 262

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Biology Test 262
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Weekly Quiz Competition
  • Question 1
    4 / -1

    By careful analysis of human genetics, how many linkage groups will be revealed?

    Solution

    One pair of chromosomes constitutes a single linkage group in humans except in case of sex chromosomes of male. In human females, a total of 23 linkage groups are present (22 pairs of autosomes + 1 pair of sex chromosome, i.e. XX). In human male, a total of 24 linkage groups are present (22 pairs of autosomes + one X + one Y chromosome).

     

  • Question 2
    4 / -1

    Lucy comes under which of the following species?

    Solution

    Lucy is the common name of the skeleton of a female of the hominin species, Australopithecus afarensis. Lucy was discovered in 1974 in Africa.

     

  • Question 3
    4 / -1

    Random breeding within a deme is known as

    Solution

    Random breeding within a deme is known as panmixia. A panmictic population is one where all individuals are potential partners.

     

  • Question 4
    4 / -1

    Identify the incorrectly matched pair.

    Solution

    Option (a) is incorrectly matched pair. Plasmodium vixax causes benign tertiary malaria. Quartan malaria is caused by Plasmodium malariae.

     

  • Question 5
    4 / -1

    Parbhani Kranti is a

    Solution

    Parbhani Kranti is a new variety of Abelmoschus esculentus (okra). It is resistant to yellow vein mosaic disease.

     

  • Question 6
    4 / -1

    In somatic hybridisation, the fusion of parent protoplasts is induced by

    Solution

    In somatic hybridisation, the fusion of parent protoplasts is induced by polyethylene Glycol (PEG).

     

  • Question 7
    4 / -1

    Which of the following is an opiate narcotic?

    Solution

    Morphine is an opiate narcotic. It is an alkaloid with molecular formula C17H19O3N. It is a strong sedative and analgesic and useful for patients who have undergone surgery.

     

  • Question 8
    4 / -1

    Which among the following is not a protozoan disease?

    Solution

    Q-fever is not a protozoan disease. It is caused by the bacterium Coxiella burnetii.

     

  • Question 9
    4 / -1

    Sour taste of vinegar is due to which one of the following acids?

    Solution

    The sour taste of vinegar is due to acetic acid. Vinegar is a liquid substance consisting mainly of acetic acid and water. It is obtained by the microbial fermentation of sugary solution.

     

  • Question 10
    4 / -1

    If a person is feeding only on meat, egg and milk then he will suffer from

    Solution

    If a person is feeding only on meat, egg and milk then he will suffer from scurvy. It is a vitamin-C deficiency disease.

     

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