Homologs which are heterozygous for an inversion have difficulties pairing in meiosis. During pairing homologous regions associate with one another.

Homologs which are heterozygous for an inversion have difficulties pairing in meiosis. During pairing homologous regions associate with one another. Consequently individual heterozygous for an inversion will form a structure known as an inversion loop. What is the consequence of a crossover within this inverted region?