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STD 12 - 5. molecular basis of inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 5. molecular basis of inheritance1 Mark
MCQ
In $DNA$ if $10\%$ guanine is present, how much thymine is present
  • A
    $10\%$
  • ✓
    $40\%$
  • C
    $80\%$
  • D
    $20\%$
✓

Answer

Correct option: B.
$40\%$
b
(b) $C$ is always equal to $G$ and $T$ is always equal to $A$ in $DNA$.

If $G = 10\%$, then $C = 10\%$

$T$ and $A = 80\%$

Hence $T = 40\%$ and $A = 40\%$

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