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mutations    音标拼音: [mjut'eʃənz]

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  • Mutation | Definition, Causes, Types, Facts | Britannica
    Because mutations are random changes, they are expected to be mostly deleterious, but some may be beneficial in certain environments In general, mutation is the main source of genetic variation, which is the raw material for evolution by natural selection
  • Mutation - Wikipedia
    Mutations may or may not produce detectable changes in the observable characteristics (phenotype) of an organism Mutations play a part in both normal and abnormal biological processes including: evolution, cancer, and the development of the immune system, including junctional diversity
  • 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
  • What Is a Genetic Mutation and Why Does It Matter?
    Some mutations affect just one gene, while others span entire chromosomes Importantly, mutations can occur in somatic cells (non-reproductive cells) or germ cells (sperm and eggs)
  • Mutations (article) | Khan Academy
    Mutations can be considered harmful, beneficial, or neutral to an organism Harmful mutations have negative effects on an organism’s health and survival For example, some mutations cause inherited disorders such as sickle cell anemia and cystic fibrosis Beneficial mutations have positive effects on an organism’s health and survival
  • Genetic Mutation: Definition, Types, Functions, and More - Health
    A genetic mutation is an alteration in the genetic code found in DNA Mutations can be harmful, neutral, or helpful and play a role in evolution
  • What is Mutation? - University of Utah
    Mutation creates slightly different versions of the same genes, called alleles These small differences in DNA sequence make every individual unique They account for the variation we see in human hair color, skin color, height, shape, behavior, and susceptibility to disease
  • Mutations - Understanding Evolution
    Mutations are changes in the information contained in genetic material For most of life, this means a change in the sequence of DNA, the hereditary material of life
  • Genetic Mutations: Causes, Types and Effects - Online Learning Platform
    Learn about genetic mutations, their causes, types, and effects Explore how mutations impact health and evolution, including examples





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