Which of the following statements regarding splicing in eukaryotes is correct?
1. Which of the following statements regarding splicing in eukaryotes is correct? Explanation: Splicing takes place within the nucleus. Introns are spliced out and exons are retained in the mature mRNA transcript.
Which of the following is most likely attributable to a base substitution at a 5 splice junction?
Which of the following is most likely attributable to a base substitution at a 5′ splice junction? The genetic code is degenerate, meaning that a codon can specify more than one amino acid. A DNA sequence produces a mutant protein in which several amino acids in the middle of the protein differ from the normal protein.
What is the purpose of alternative splicing in eukaryotic cells?
Alternative splicing of RNA is a crucial process for changing the genomic instructions into functional proteins. It plays a critical role in the regulation of gene expression and protein diversity in a variety of eukaryotes. In humans, approximately 95% of multi-exon genes undergo alternative splicing.
Is splicing the same in all cells?
Splicing occurs in all the kingdoms or domains of life, however, the extent and types of splicing can be very different between the major divisions. Eukaryotes splice many protein-coding messenger RNAs and some non-coding RNAs. Prokaryotes, on the other hand, splice rarely and mostly non-coding RNAs.
What is the purpose of introns?
Introns can provide a source of new genes According to their model, the short ORFs can evolve into real functional genes through a kind of continuous evolutionary process. In that sense, long non-coding intron regions in higher eukaryotes can be a good reservoir of short and non-functional ORFs.
What is the major purpose of RNA?
The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins.