BIOLOGY
NUCLEIC ACIDS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
both are found in chromosomes
|
|
|
DNA is found in chromosomes, but RNA is not
|
|
|
RNA is found in chromosomes, but DNA is not
|
|
|
neither is found in chromosomes
|
Detailed explanation-1: -Explanation: RNA contains uracil, while DNA contains thymine. All of the other statements are true. Note that DNA is usually double-stranded and RNA is usually single-stranded, but both can exist in the opposite configuration under certain conditions.
Detailed explanation-2: -Uracil is found only in RNA and not in DNA.
Detailed explanation-3: -The four bases of DNA are adenine, thymine, cytosine, and guanine, abbreviated A, T, C, and G respectively. In RNA, the base thymine is not found and is instead replaced by a different base called uracil, abbreviated U; the other three bases are present in both DNA and RNA.
Detailed explanation-4: -Unlike DNA, thymine (T) is not present in RNA molecules, T is replaced by the uracil (U) base in RNA. The statement that is not true about DNA is that DNA contains adenine, guanine, cytosine, and uracil. So, the correct option is (e).