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Biotechnology Principles and Processes question

2003 · Q49
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Biotechnology Principles and Processes question

2003 · Q49

NEETBiologyBiotechnology Principles and ProcessesMCQ+4 / −1
In recent years, DNA sequences (nucleotide sequence) of mt-DNA and Y chromosomes were considered for the study of human evolution, because : -
  1. A
    They are uniparental in origin and do not take part in recombination
  2. B
    They can be studied from the samples of fossil remains
  3. C
    Their structure is known in greater detail
  4. D
    They are small, and therefore, easy to study
View written solutionFree

Correct answer: A

Sequence of both mtDNA and Y chromosomes are considered for the study of human evolution because they are uniparental in origin. mtDNA is inherited along with the maternal cytoplasm and Y chromosome is inherited from father. So they do not take part in recombination. In addition, mtDNA has a higher mutation rate than nuclear DNA so that it is more useful for short term evolutionary studies.

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