APFIVE Evolutionary Significance of Conserved Introns
In eukaryotic species, the structure of homologous protein-coding genes often includes exons (coding regions) and introns (non-coding regions). Which statement best explains the evolutionary significance of conserved intron positions across different species?
A
Intron-containing genes are more likely to be horizontally transferred
B
Introns are randomly inserted after speciation events
C
Intron positions serve as molecular fossils that track evolutionary relationships
D
Intron patterns reflect convergent evolution to optimize gene expression
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