Question

In the RNA molecules which nitrogen base is found in place of thymine

Answer 1

Explanation:

Three of the four nitrogenous bases that make up RNA — adenine (A), cytosine (C), and guanine (G) — are also found in DNA. In RNA, however, a base called uracil (U) replaces thymine (T) as the complementary nucleotide to adenine

Answer 2

Answer:

In the RNA molecules Uracil is found in place of Thymine.

Explanation:

• The manufacture of uracil uses less energy than that of thymine. This could explain why it is used in RNA.
• When DNA is damaged, the nucleotide bases can alter, leading to mutations that cannot be fixed if the base in question was uracil.
• This is so that the DNA repair enzymes may recognize thymine rather than uracil.
• The chemical breakdown of cytosine results in the easy production of uracil in DNA.
• As a result, the fact that thymine serves as its base makes it easier to detect and fix these early changes.
• Because thymine has higher resistance to photochemical mutation and makes the genetic code more durable, DNA uses it instead of uracil.

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