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18 Οκτ 2024 · Mutation, an alteration in the genetic material (the genome) of a cell of a living organism or of a virus that is more or less permanent and that can be transmitted to the cell’s or the virus’s descendants. The genomes of organisms are all composed of DNA, whereas viral genomes can be of DNA or RNA.
- Point Mutation
point mutation The effect of base substitutions, or point...
- Anthony J.F. Griffiths
Mutation, an alteration in the genetic material (the genome)...
- Somatic Mutation
The mutation affects all cells descended from the mutated...
- Mutation Summary
mutation, Alteration in the genetic material of a cell that...
- Point Mutation
A mutation is a heritable change in the nucleotide sequence of an organism's DNA that ultimately serves as a source of genetic diversity. A single base change can create a devastating...
28 Απρ 2017 · Some mutations occur as a natural byproduct of the error rate in DNA or RNA replication mechanisms. A mutation could be a loss-of-function or gain-of-function mutation, depending on whether the gene product is inactivated or has enhanced activity.
For example, cancer is a potent somatic mutation that will affect a single organism's survival. As a different focus, evolutionary theory is mostly interested in DNA changes in the cells that...
Mutations have been powerful tools for genetic studies as well as to study biological functions, for example, growth and development. The natural occurrence of mutations can be enhanced experimentally by applying agents referred to as mutagens.
The types of mutations include: Silent mutation: Silent mutations cause a change in the sequence of bases in a DNA molecule, but do not result in a change in the amino acid sequence of a protein (Figure 14.5.1 14.5. 1).
Mutations can be grouped into two main categories based on where they occur: somatic mutations and germ-line mutations. Somatic mutations take place in non-reproductive cells.
