Question

'Illegitimate crossing over' is another term for

• A. Transition
• B. Transversion
• C. Reciprocal translocation
• D. None of the above

Answer 1

The correct option is C Reciprocal translocation

1) Transition refers to a point mutation that changes a purine nucleotide to another purine (A ↔ G), or a pyrimidine nucleotide to another pyrimidine (C ↔ T)

2) Transversion refers to a point mutation in deoxyribonucleic acid (DNA), where a single (two rings) purine is changed for a (one ring) pyrimidine, or vice versa.

3) The reciprocal translocation is like crossing over except that it involves an exchange between the segments of two non-homologous chromosomes. It is sometimes called “illegitimate crossing over”.

So, the correct answer is 'Reciprocal translocation'.