Kendra is a female name of disputed origins. Kendra is a moderately popular female first name, ranking 403 out of 4275 for females of all ages in the 1990 U.S. Census.The name was at its most popular in the United States from the mid-1980s to mid-1990s, peaking in 1987.endra is a moderately popular female first name, ranking 403 out of 4275 for females of all ages in the 1990 U.S. Census.
Point mutations have a variety of effects on the downstream protein productâconsequences that are moderately predictable based upon the specifics of the mutation. These consequences can range from benign (e.g. synonymous mutations) to catastrophic (e.g. frameshift mutations), with regard to protein production, composition, and function.
However, these mistakes are rare, and the cell has repair mechanisms that can repair some damage. - Sometimes a permanent change occurs in a cell's DNA and this is called a mutation. - Because a mutation in a gene causes a change in the protein that is made, the enzyme is nonfunctional. Types of mutations - Mutations can range from changes in a single base pair in the coding sequence of DNA to the deletions of large pieces of chromosomes. - Point mutations involve a chemical change in just one base pair and can be enough to cause a genetic disorder. - A point mutation in which one base is exchanged for another is called a substitution. - Most substitutions are missense mutations, where the DNA code is altered so that it codes for the wrong amino acid. - Other substitutions, called nonsense mutations, change the codon for an amino acid to a stop codon. Nonsense mutations cause translation to terminate early. Nearly all nonsense mutations lead to proteins that cannot function normally. - Another type of mutation that can occur involves the gain or loss of a nucleotide in the DNA sequence.