Genmutation exempel One example is a study done on the DFE of random mutations in vesicular stomatitis virus. Out of all mutations, % were lethal, % were non-lethal deleterious, and % were neutral. Another example comes from a high throughput mutagenesis experiment with yeast. [71]. 1 genmutationer 2 For example, during the complex process when a cell divides to make 2 new cells, the cell must make another copy of all of its DNA, and sometimes mistakes (mutations) occur while this is happening. Every time a cell divides is another chance for gene mutations to occur. 3 vad är en genmutation 4 somatic mutation, genetic alteration acquired by a cell that can be passed to the progeny of the mutated cell in the course of cell division. Somatic mutations differ from germ line mutations, which are inherited genetic alterations that occur in the germ cells (i.e., sperm and eggs). Somatic mutations are frequently caused by environmental factors, such as exposure to ultraviolet radiation or. 5 A gene variant is a permanent change in the DNA sequence that makes up a gene. This type of genetic change used to be known as a gene mutation, but because changes in DNA do not always cause disease, it is thought that gene variant is a more accurate term. Variants can affect one or more DNA building blocks (nucleotides) in a gene. 6 For example, the yellow color on half of a petal on this red tulip was caused by a somatic mutation. The seeds of the tulip do not carry the mutation. Cancer is also caused by somatic mutations that cause a particular cell lineage (e.g., in the breast or brain) to multiply out of control. 7 exempel på mutationer 8 Ett exempel är. 9 Genmutationer orsakar inte alltid sjukdomar. 10