The statement that is true about exons and introns of pre-mRNA is:
Exons are expressed, and introns are removed.
<h3>What is pre-mRNA?</h3>
Precursor mRNA or pre-mRNA is the first transcript of a protein-coding gene.
<h3>Characteristics of pre-mRNA</h3>
Introns are the DNA or RNA sequences that separate the exons, the pre-mRNA regions corresponding to these are eliminated in the nucleus during the maturation process.
The exons of a gene are the sequences that will give the messenger RNA that will be translated into amino acids.
Therefore, we can conclude that the pre-mRNA maturation process removes introns and joins exons to produce a mature messenger RNA molecule.
Messenger RNA (mRNA) is synthesized from the gene segment of DNA and, ultimately, contains key information about the amino acid sequences of the synthesized protein. The genetic code is translated for mRNA, not DNA. RNA messenger delivers a cytoplasmic cipher with protein. Cells do not contain large amounts of mRNA. This is because, unlike other RNAs, mRNA is constantly degrading.
In the cytoplasm, ribosomal RNA (rRNA) and protein are associated with the formation of a nuclear protein called ribosomes. Ribosomes carry and carry the enzymes necessary for protein synthesis. Ribosomes combine with mRNA to provide a stabilizing structure that can immobilize all materials during protein synthesis. Some ribosomes can be bound to a single RNA throughout circumstances.
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Transfer RNA (tRNA) contains about 75 nucleotides, three of which are antacodons, and one is an amino acid. TRNA carries amino acids that will be involved in reading the code and developing proteins. A portion of the mRNA replicates to form multiple fragments of the double helix. TPNK reads the mRNA codon using its own anticodon. The actual reading occurs by combining base pairs with hydrogen bonds in accordance with the base pairs principle. Each codon is read by the corresponding codon in different tRNA, depending on the anticodon.
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