Question

If the DNA strand has nitrogenous base sequence ATTGCC, the mRNA will have?
A. ATTGCA
B. UGGACC
C. UAACGG
D. ATCGCC

Answer 1

Hint:
mRNA is the protein code for genes, and it participates in the translation of proteins into functional molecules. It also helps to regulate gene expression by binding with other transcription factors to create stable complexes. The mRNA can be found in both the cytoplasm and nucleus of cells, but its concentration is highest in the nucleus.

Complete answer:
In most cases, DNA replicates and preserves genetic data. It is a blueprint for all of an organism's genetic material. In essence, RNA transports the genetic material present in DNA to the ribosomal protein factories in a format utilized to construct proteins.
So, when the DNA strand has nitrogenous base sequence ATTGCC, the mRNA will have UAACGG.
A template or antisense strand of the DNA sequence of ATTGCC would have a complementary strand sequence of TAACGG on the sense strand of DNA and a sequence of UAACGG on mRNA.
Therefore, the mRNA will have UAACGG.

Option ‘C’ is correct

Note:
You need to be aware of a few things in order to respond to this query. First, polymerases, which are enzymes, recognize the nitrogenous base sequence (ATTGCC) at the start of DNA strands and translate it into mRNA. Second, because these same polymerases can "read" bases in different ways, different base sequences will result in distinct mRNAs. Thirdly, modifications (or mutations) to DNA's nucleotides can result in faulty or atypical translations of mRNA into proteins, which can ultimately harm cells or result in disease.