PSY BEH 101D Lecture Notes - Lecture 2: Noncoding Dna
15 Jul 2018
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Additional dna and rna (another molecule) surround each gene. In a process called methylation, this material enhances, transcribes, connects, empowers, silences, regulates, and alters genes. This material used to be called junk but no longer. One of the most important discoveries in genetics in the last. 10 years is that the vast majority of trait-associated dna variations occur in regions of the genome that were once labeled a junk dna" because they do not code for proteins. We now know that these regions harbor genetic elements that control where, when, and to what extent specific genes are expressed. Rna turns some genes and alleles off. A person can have the genetic tendency for a particular trait, disease, or behavior, but that tendency might never appear in that person"s life because it was never turned on. For each individual, the collection of his or her genes is called the genotype. An organism"s entire genetic inheritance, or genetic potential.
