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1 December, 02:10

Which best describes STRs?

a. a piece of non-coding DNA that consists of 9-80 repeating sequences of base pairs

b. a piece of coding DNA that consists of 9-80 repeating sequences of base pairs

c. a piece of coding DNA consisting of 2-5 repeating sequences of base pairs

d. a piece of non-coding DNA consisting of 2-5 repeating sequences of base pairs

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Answers (2)
  1. 1 December, 02:21
    0
    Option - B

    STRs (Short tandem repeat polymorphism) is best described by a piece of coding DNA that consists of 9-80 repeating sequences of base pairs.
  2. 1 December, 02:57
    0
    The correct answer is: D. a piece of non-coding DNA consisting of 2-5 repeating sequences of base pairs.

    Explanation:

    STRs, abbreviated from Short Tandem Repeat, are microsatellites: sequences of non-coding DNA that repeat units that are 2 to 5 base pairs in length. The number of repetitions of these sequences varies from people to people, which gives it a significant importance in the fields of forensics, where is used to identify a person.

    Non-coding DNA is a sequence that will not translate into any protein. Half of our DNA is made of non-coding DNA.
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