Question

An exchange of segments between the two non-homologous chromosomes is called

• A. Polyploidy
• B. Chromosomal aberration
• C. Translocation
• D. Inversion

Answer 1

The correct option is C Translocation

1) Polyploidy is the state of a cell or organism having more than two paired (homologous) sets of chromosomes.

2) A chromosome aberration is a missing, extra, or irregular portion of chromosomal DNA. It can be from an atypical number of chromosomes or a structural abnormality in one or more chromosomes.

3) A chromosome translocation is a chromosome abnormality caused by rearrangement of parts between nonhomologous chromosomes

4) An inversion is a chromosome rearrangement in which a segment of a chromosome is reversed end to end. An inversion occurs when a single chromosome undergoes breakage and rearrangement within itself.

So, the correct answer is 'Translocation'.