If alternative splicing did NOT occur, then ________.
A) the human genome would likely contain many more genes
B) the E. coli genome would contain many fewer genes
C) there would be little correlation between the complexity of organisms and genome size
D) there would be many fewer genes devoted to metabolism in Arabidopsis and yeast

Question

Quizplus · Accepted Answer

Alternative splicing allows for a single gene to produce multiple mRNA transcripts and ultimately multiple protein isoforms. Without alternative splicing, each distinct protein isoform would require its own gene, thus greatly increasing the number of genes in the genome. This is particularly relevant in complex organisms like humans where alternative splicing is a major contributor to protein diversity.

If Alternative Splicing Did NOT Occur, Then ________