Question

Which of the following is true regarding sense and antisense strands?
A. Both the strands are present on RNA
B. Both the strands are present on DNA
C. Sense strand is on DNA and antisense on RNA
D. Sense strand is on RNA and antisense on DNA

Answer 1

Hint: The sense strand is said as coding strand which runs opposite to the template strand. The antisense strand acts as a template for the synthesis of mRNA.

Complete Answer:
The template strand used in the transcription process is the antisense strand. This strand is complementary to the resulting mRNA and sense strand. It contains anticodons in this strand.

Now, let us find the solution from the options-
- The Sense strand is the DNA strand that in the transcription process is not used as a template. But except for the inclusion of Uracil (U) instead of thymine (T), the resulting RNA molecule is almost similar to the sense strand.
- The Sense strand comprises codons. The template strand used in the transcription process is the antisense strand. This strand is complementary to the resulting mRNA and sense strand. It contains anticodons in this strand.
- Sense and antisense are the two words used in double-stranded DNA to identify the two strands, depending on which strand serves as the transcription template. The precise nucleotide sequence of the mRNA that encodes a functional protein is found in the Sense strand.
- The Antisense strand acts as the transcription basis and comprises the transcribed mRNA with a complementary nucleotide sequence. From these we came to know that both sense and antisense strands are found only in DNA. Thus, the options A, C and D are incorrect.

Thus, the correct answer is option B the strands are present on DNA.

Note: In RNA interference within the cell, the sense and antisense strands play a vital role. RNA interference is a common process that is used by cells to control the expression of genes. Gene expression is knocked down by the development of an antisense DNA oligonucleotide strand during RNA interference, which can be complementarity combined with a specific gene's transcribed mRNA strand.