The intron acting in this scenario is A carbohydrate. <u>Option A.</u>
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The most important function of introns is to allow alternative splicing, allowing multiple proteins to be made from a single gene. Some introns are spliced and further processed to encode functional RNA molecules. The first stage is the genomic intron, which is the DNA sequence of the introns.
Introns are regions within a gene that do not remain in the final mature mRNA molecule after transcription of the gene and do not code for the amino acids that make up the protein encoded by that gene. Most protein-coding genes in the human genome consist of exons and introns. Introns are nucleotide sequences in DNA and RNA that do not directly code for proteins and are removed during mRNA maturation by RNA splicing during the precursor messenger RNA stage.
The answer is oropharynx.
The reason for this type of epithelium in this region of the respiratory tract is due to
its proximity to the esophagus. This
means that this region of the respiratory
tract is subject to abrasion by food
passing down the esophagus. This
epithelium is continuous with that of the esophagus.
