Question

Which of the following structures would you expect to see in meiosis of a cell with a previously existing reciprocal balanced translocation? tetravalent complex in melosisi tetravalent complex in meiosis II o O o unpaired loop in meiosis O inversion loop in melosis

Answer 1

Ans. unpaired loop in meiosis I

Explanation: In case of balanced reciprocal translocation, there is exchange of segment of chromosomes between two chromosomes which are not homologous. Genetic material is not lost from the genome but pairing of chromosome which take part in translocation with its homolog will be affected at the time of synapsis during meiosis. Hence, during meiosis I normal pairing will not take place as it is in the original normal homologous chromosome pair and an unpaired loop will be formed at the translocated chromosomal segment i.e. non-homologous region.