Question

When does exon shuffling occur?

Answer 1

The correct answer is C.

 Exon shuffling occurs as an alternative splicing pattern in post-transcriptional processing.

Exon shuffling is termed as a molecular mechanism which is formed of new genes. Two or more exons which are of different genes can be brought together ectopically.
 Exon shuffling can occur in cross over during sexual recombination of illegitimate recombination and parental genomes, transposon-mediated exon shuffling. Exon shuffling follows certain splice frame rules.

Answer 2

Answer:

C. as an alternative splicing pattern in post-transcriptional processing.

Explanation:

Exon shuffling is the process that results in formation of new genes in eukaryotes in a post transcriptional modification manner. The newly formed mRNA undergoes the process to bring the exons from different genes together resulting in formation of new gene. It can also occur with help of transposons and/or duplication of existing exons.