Weathering and erosion. Weathering is the process where rock is dissolved, worn away or broken down into smaller and smaller pieces. There are mechanical, chemical and organic weathering processes.
What is trinucleotide repeat disorders? A class of genetic diseases that causes expansion of the number of trinucleotide (three base repeats of CG-rich units) within a gene sometimes associated with deleterious consequences.
There are two main forms of mutations associated with prion disease: point changes (i.e. single nucleotide substitutions or transversions) which cause an amino acid change (missense mutation) or less commonly cause the coding to prematurely terminate (stop or nonsense mutation).here are two main forms of mutations associated with prion disease: point changes (i.e. single nucleotide substitutions or transversions) which cause an amino acid change (missense mutation) or less commonly cause the coding to prematurely terminate (stop or nonsense mutation).