Practice question

MCQ

Question

New protein-coding genes sometimes originate whenexons from different ancestral genesare combined through recombination events, producing anovel domain architecturewithin a single polypeptide. This mechanism of generating new genes is called:

Options

Choose one · Correct answer highlighted

Exon shuffling, in which recombination or transposon-mediated rearrangements join coding regions from separate genes. Correct Alternative splicing, in which a single pre-mRNA is processed in multiple ways to yield different transcripts. Retroposition, in which an mRNA is reverse-transcribed and inserted elsewhere in the genome. Transposon insertion, in which mobile elements insert into genes, occasionally disrupting or modulating their expression.

Explanation

Analysis of new protein-coding genes sometimes originate whenexons from shows Exon shuffling, in which recombination or transposon-mediate represents established outcome. functional assays supports option A, whereas distractors confuse substrate or regulatory direction and fail to reproduce observed results.

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