Q. DNA and RNA, both are types of nucleic acids. Figure out the correct statements concerning DNA and RNA from below.
. Adenine and guanine are bases that have a double ring structure; cytosine, thymine and uracil are bases with a single ring structure.
. An adenine nucleotide from DNA is the same as an adenine nucleotide from RNA; in DNA, adenine pairs with thymine and in RNA adenine pairs with uracil.
. The base pairing occurs in a double DNA helix and when RNA is synthesised during transcription it follows the rule that a purine pairs with a pyrimidine.
. The two polynucleotide strands of a DNA molecule run in opposite directions so that the double helix formed has two strands that are parallel to each other.

 1608  266 Molecular Basis of Inheritance Report Error

Solution:

Correct answer is (d) and only