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ICSE Class 10 Answered

Explain the following terms: Mutation Homologous chromosomes Alleles
Asked by Topperlearning User | 23 Jul, 2015, 01:28: PM
answered-by-expert Expert Answer
  1. Mutation: A sudden change in one or more genes or in the number of or in the structure of chromosomes which causes changes in certain traits is called a mutation.
  2. Homologous chromosomes: Homologous chromosomes are a pair of corresponding chromosomes of the same shape, size and length (but not identical) containing the same genes in the same order, one from each parent.
  3. Alleles:  The alternative forms of a gene responsible for the alternative forms of a character occupying the same position on homologous chromosomes are called alleles.
Answered by | 23 Jul, 2015, 03:28: PM
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