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  Section: Genetics » Mutations » Morphological Level (Including Lethal Mutations)
 
 
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Stages of Which Mutations Occur

 
     
 
Content
Mutations : 1.  Morphological Level (Including Lethal Mutations)
Brief History
Range of Mutations
Stages of Which Mutations Occur
Types of Mutations
Spontaneous Vs Induced Mutations
Mutation Rates and Frequencies
Induced Mutations 
Detection of Mutations in Drosophila 
Detection of Mutations in Plants
Use of Microbial Systems to Assess Potency of Mutagens
Practical Applications of Mutations
Effect of Genotypes on Induction of Mutations (Mutator Gene and Paramutations)
Adaptive Mutations and Genotrophs


Mutations can occur at any stage during the development. Depending upon this stage following situations will be met:
  1. If mutation occurs in a germinal cell, before differentiation of gametes, it would influence several gametes and will thus influence all the individuals derived from these affected gametes.
  2. If mutation occurs in a gamete or a zygote, a single individual will carry the mutation.
  3. If mutation occurs in a cell after the zygote has undergone one or more divisions, only a part of the body will show the mutant character. Such mutations will be called somatic mutations, in contrast to germinal mutations listed in (1) and (2) above.

 
     
 
 
     




     
 
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