What are exons and introns? How do they relate to premRNA and posttranscriptional processing?
What are exons and introns? How do they relate to premRNA and posttranscriptional processing?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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What are exons and introns? How do they relate to premRNA and posttranscriptional processing?
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A gene is a locatable region of the genomic sequence which corresponds to a unit of inheritance associated with regulatory regions, transcribed regions and occasionally, other regulatory sequences. The size of the genes in higher eukaryotes varies greatly. Some genes have more than 2 million nucleotide pairs while 100,000 nucleotide pair genes are more common. Most of the portion of the gene in higher eukaryotes consists of non-coding DNA which interrupts the relatively short segments of coding DNA.
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