When a crossover occurs within the inversion loop of a pericentric inversion each recombinant chromatid will have
A)a dicentric bridge.
B)no duplications.
C)a deletion of some genes in the inverted region.
D)no mutations

Question

Quizplus · Accepted Answer

During a crossover event within the inversion loop, one of the recombinant chromatids will have a deletion of some genes in the inverted region. This occurs because the crossover break point cuts through the inverted segment, resulting in one recombinant chromosome with a deletion of those genes. The other recombinant chromatid will have a duplication of the same genes because it received both copies of the inverted segment from the non-recombinant chromosome. However, neither chromatid will have a dicentric bridge, as this structure can only form if both inverted regions are present on the same chromatid. There may also be potential mutations resulting from the crossover itself, but this is not a definitive outcome of the process.

When a Crossover Occurs Within the Inversion Loop of a Pericentric