Question

If one strand of DNA has the nitrogenous base sequence at ATCTG, what would be the complementary RNA strand sequence?
A. TTAGU
B. UAGAC
C. AACTG
D. ATCGU

Answer 1

Hint: RNA-sequencing begins with the transcription-inspired use of RNA to create a copy of DNA. Because it is the opposite of transcription, the enzyme known as reverse transcriptase is used to create this kind of DNA, which is known as complementary DNA (cDNA).
Complete step-by-step solution:
Since it enables the base pairs to be placed in a more energetically advantageous manner, complementary base pairing is crucial for the DNA molecule. It is necessary for the DNA double-helical structure to develop. Due to the fact that it enables semi-conservative replication, it is also crucial for DNA synthesis and replication.
Guanine and adenine consistently attach to cytosine and thymine in DNA due to a phenomenon known as complementary base pairing. Adenine and thymine always share two hydrogen bonds while guanine and cytosine share three hydrogen bonds. Thymine (T) is swapped out in RNA for a different pyrimidine nucleotide called uracil (U).
It is feasible to create one DNA strand using the complementary base pairing of the other strand in a double-helix. A stable DNA molecule can only be created by certain interactions between the nitrogenous bases of DNA.
Hence, option B is the correct answer.
The pairing principle is adhered to while pairing in strands. A with U and C with G, respectively. ATCTG is the provided sequence on the DNA strand. Consequently, UAGAC will be the complimentary one for RNA.
Note:
Perhaps the most significant molecules in cell biology are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), which store and read the genetic information that is the basis of all life. Both are linear polymers made up of sugars, phosphates, and bases, but they differ in a few significant ways. These differences allow the two molecules to cooperate and perform their fundamental functions.