Egypt's geological history has produced four major physical regions: the Nile Valley and Delta, the Western Desert (also known as the Libyan Desert), the Eastern Desert (also known as the Arabian Desert), and the Sinai Peninsula.
Abbreviation: Ks values. A synonymous mutation is a change in the DNA sequence that codes for amino acids in a protein sequence, but does not change the encoded amino acid. Due to the redundancy of the genetic code (multiple codons code for the same amino acid), these changes usually occur in the third position of a codon.
Examples of spontaneous mutations include point mutations and frameshift mutations. Point mutations are the result of incorrect base pairings during cell division. If the amino acid code (triplet) is not altered by the change in bases, the point mutation is said to be synonymous. The resulting protein is not altered.