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  4. Given below is a representation of a kind of chromosomal mutation. What is the kind of mutation represented?

Q. Given below is a representation of a kind of chromosomal mutation. What is the kind of mutation represented?Biology Question Image

 1310  179 CMC MedicalCMC Medical 2012 Report Error

Solution:

Inversion involves a reverse order of genes in part of chromosomes. In figure, break occurs between A and E. Remain at the broken ends may lead to inversion of segment BCD into DCB. In deletion, a section of chromosome is lost. In duplication, a section of chromosome is duplicated. In reciprocal translocation an exchange of chromosome fragment occurs in between two non-homologous chromosomes.