Mutations

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by JessicaFontecha
Last updated 5 years ago

Discipline:
Science
Subject:
Biology

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Mutations

MUTATIONS

Definition

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Effects

References

http://learn.genetics.utah.edu/archive/mutations/http://www.ncbi.nlm.nih.gov/pubmed/14501066Cabrera, Calero Antonio María. Biology and Geology, ESO 4: Oxford Clil. [San Fernando De Henares]: Oxford Educación, 2012. Print

- Occasionally, genes can be altered due to the uexpected and random changes called mutations. - A mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the gene. - These types of changes are necessary because they increase the genetic variation of individuals in a community.

- Physical mutagens include electromagnetic radiation, such as gamma rays, X rays, and UV light, and particle radiation, such as fast and thermal neutrons, beta and alpha particles.- The rays from the sun act as mutagenic agents. The atmosphere stops the most dangerous types of radiation but some UV radiation does reach the Earth.

Physical Mutagens

Experiment in 1960 about radiation


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