AP BIOLOGY

Detailed explanation-1: -Uracil is not found in DNA as it uracil has more base pair affinity to adenine, guanine and cytosine. Instead thymine is present in DNA.

Detailed explanation-2: -Abstract. Uracil is one of four nitrogen bases, most frequently found in normal RNA. Uracyl can be found also in DNA as a result of enzymatic or non-enzymatic deamination of cytosine as well as misincorporation of dUMP instead of dTMP during DNA replication.

Detailed explanation-3: -One of the four nucleobases in DNA’s nucleic acid, represented by the letters G-C-A-T, is thymine. This is so that the DNA repair enzymes may recognize thymine rather than uracil. Because thymine has a higher resistance to photochemical mutation and makes the genetic code more durable, DNA uses it instead of uracil.

Detailed explanation-4: -Nitrogen base not found in DNA is uracil. It is found only in RNA.

Detailed explanation-5: -Explanation: DNA uses thymine instead of uracil because thymine has greater resistance to photochemical mutation, making the genetic message more stable. This is necessary for holding all of the information needed for life to function.