What is the purpose of parental DNA?

What is the purpose of parental DNA?
  1. To act as a template for synthesis of a new strand
  2. To produce two double stranded DNA identical to the parental DNA molecule
  3. To observe the constant ratios between Adenine and Thymine and Guanine and Cytosine
  4. To be complementary to each other

Solution

If each strand from a DNA (parental DNA) acts as a template for synthesis of a new strand, the two double stranded DNA (daughter DNA) thus, produced would be identical to the parental DNA molecule.

Asked in: NCERT

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