AP EAMCET201920 Apr 2019Evening ShiftChemistryBiomoleculesActual
Which of the following statements about DNA is not correct?
Options
- AIt has a double helix structure
- BAdenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine
- CThe two strands in a DNA molecule are not complementary to each other
- DIt contains the pentose sugar, 2-deoxyribose
Correct answer
C. The two strands in a DNA molecule are not complementary to each other
Step-by-step solution
I. DNA has a double helix structure. II. Adenine form hydrogen bond with thymine A=T ) and cytocine forms hydrogen bond with guanine (C G) . III. The two strands in DNA molecules are complementary to each other. IV. DNA strand contains pentose -2-deoxyribose sugar. Thus, option (c) is inorrect.