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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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