Mutation - Wikipedia A homozygous mutation is an identical mutation of both the paternal and maternal alleles Compound heterozygous mutations or a genetic compound consists of two different mutations in the paternal and maternal alleles
Mutation | Definition, Causes, Types, Facts | Britannica 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
MUTATION中文 (简体)翻译：剑桥词典 - Cambridge Dictionary Environmental pressures encourage genes with certain mutations to persist and others to die out 环境的影响使发生了某些突变的基因存活下来，另一些则消亡了。 These plants carry the mutation for red flowers 这些植物携带红花变种。
Mutation A mutation is a change in a DNA sequence Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses
Mutations - Understanding Evolution 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
Genetic Mutation | Learn Science at Scitable - Nature Mutation rates are usually very low, and biological systems go to extraordinary lengths to keep them as low as possible, mostly because many mutational effects are harmful