The Covington County, Alabama sales tax is 6.00% , consisting of 4.00% Alabama state sales tax and 2.00% Covington County local sales taxes.The local sales tax consists of a 2.00% county sales tax. The Covington County Sales Tax is collected by the merchant on all qualifying sales made within Covington County.
CASK-related intellectual disability, as its name suggests, is caused by mutations in the CASK gene. This gene provides instructions for making a protein called calcium/calmodulin-dependent serine protein kinase (CASK).
A point mutation caused a single nitrogen base in a codon for one amino acid in the protein called glutamic acid to instead code for the amino acid valine. This single small change causes a normally round red blood cell to instead be sickle shaped. Frame Shift Mutations.