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The word intron is derived from the terms intragenic region, [1] and intracistron, [2] that is, a segment of DNA that is located between two exons of a gene.The term intron refers to both the DNA sequence within a gene and the corresponding sequence in the unprocessed RNA transcript.
Alternative splicing is regulated so that each mature mRNA may encode a multiplicity of proteins. Alternative splicing of the primary transcript. The effect of alternative splicing in gene expression can be seen in complex eukaryotes which have a fixed number of genes in their genome yet produce much larger numbers of different gene products. [9]
Gene conversion is the process by which one DNA sequence replaces a homologous sequence such that the sequences become identical after the conversion. [1] Gene conversion can be either allelic , meaning that one allele of the same gene replaces another allele, or ectopic , meaning that one paralogous DNA sequence converts another.
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 February 2025. Manipulation of an organism's genome For a non-technical introduction to the topic of genetics, see Introduction to genetics. For the song by Orchestral Manoeuvres in the Dark, see Genetic Engineering (song). For the Montreal hardcore band, see Genetic Control. Part of a series on ...
Alternative splicing, alternative RNA splicing, or differential splicing, is an alternative splicing process during gene expression that allows a single gene to produce different splice variants. For example, some exons of a gene may be included within or excluded from the final RNA product of the gene. [ 1 ]
A splice site mutation is a genetic mutation that inserts, deletes or changes a number of nucleotides in the specific site at which splicing takes place during the processing of precursor messenger RNA into mature messenger RNA. Splice site consensus sequences that drive exon recognition are located at the very termini of introns. [1]
Eukaryotic transcription is the elaborate process that eukaryotic cells use to copy genetic information stored in DNA into units of transportable complementary RNA replica. [1] Gene transcription occurs in both eukaryotic and prokaryotic cells. Unlike prokaryotic RNA polymerase that initiates the transcription of all different types of RNA, RNA ...
CDR1as/CiRS-7 is encoded in the genome antisense to the human CDR1 (gene) locus (hence the name CDR1as), [18] and targets miR-7 (hence the name CiRS-7 – Circular RNA Sponge for miR-7). [25] It has over 60 miR-7 binding sites, far more than any known linear miRNA sponge. [18] [25] AGO2 is miR-7's associated Argonaute protein (see above).