Advertisements
Advertisements
Question
Which of the following bases is not present in DNA?
Options
Adenine
Thymine
Cytosine
Uracil
Advertisements
Solution
Uracil
Explanation:
Uracil is rarely found in DNA, which could be an evolutionary adaptation to increase genetic stability. This is due to the fact that cytosine can deaminate spontaneously to produce uracil via hydrolytic deamination.
Chemical formula: C4H4N2O2
APPEARS IN
RELATED QUESTIONS
Write the structure of a nucleoside
Which of the following NOT present in DNA?
(a) adenine
(b) Guanine
(c) Thymine
(d) Uracil
What are three types of RNA molecules which perform different functions?
What are nucleic acids?
Draw the structures of adenine.
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at ____________.
Which base is present in RNA, but not in DNA?
Aldopentoses named as ribose and 2-deoxyribose are found in nucleic acids. What is their relative configuration?
Write the important structural differences between DNA and RNA.
Which of the following statements is not true about RNA?
Write two differences between DNA and RNA.
Mention two important functions of nucleic acids.
Give a reason for the following observations:
The two strands in DNA are complementary to each other.
State the functions of RNA and DNA.
What products would be formed when a nucleotide from DNA containing thymine is hydrolysed?
