AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

DNA MAKES RNA MAKES PROTEIN

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is never found in DNA?
A
deoxyribose
B
uracil
C
thyamine
D
phophate
Explanation: 

Detailed explanation-1: -Nitrogen base not found in DNA is uracil. It is found only in RNA.

Detailed explanation-2: -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: -Final answer: Uracil is not found in DNA.

Detailed explanation-4: -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-5: -The uracil present in RNA(ribonucleic acid) bonds with a double hydrogen bond with Adenine while absent in DNA(Deoxyribonucleic acid).

There is 1 question to complete.