This could be caused by other frameshift mutagens, including acridine orange or proflavin itself. Hydroxylamine and alkylating agents could have generated this type of mutation originally. Transversions usually arise from apurinic sites, so I would guess that the original mutation was induced by an alkylating agent. It is very unlikely that this would happen again, so they should not be concerned. Chapter 8 1.
Inversions have the classic double loop at meiosis, and have no crossovers when heterozygotes.
They also affect map distances. This is a pericentric inversion of regions 23.456. This is a tandem duplication of region 6. 5. Thus, a maps to section 2 on the chromosome. Mutation b is deleted by deletion 1 but no others.