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A novel species with double stranded genetic material consists of 5 bases namely P.Q. R. S. T. with percentages given below. Percentage 22 \( 28 \quad 22 \) Based on the above information, which ONE of the following infrences is NOT supported by the observation?

1. S- base pairs with T, and Q base pairs with R
2. S base pairs with \( Q \),and T base pairs with \( Q \)
3. P base pairs with \( R \), and \( S \) base pairs with \( Q \)
4. P base pairs with \( \mathrm{R} \), and T base pairs with \( \mathrm{Q} \)

Correct answer: S base pairs with \( Q \),and T base pairs with \( Q \)

Solution

In double-stranded genetic material, complementary bases must match in total abundance across the two strands. The only option that cannot be true is the one assigning the same base to pair with two different bases, which violates fixed pairing rules.

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