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

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

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Solution:

Adenine and guanine are purines which have two-ring structure whereas thymine, uracil and cytosine are pyrimidines having single ring structure. The nucleotide of DNA and RNA are not same as the sugar molecule is different. Ribose in RNA and deoxyribose in DNA.