Alternative splicing
How can a single eukaryotic gene produce several different proteins?
Answer D: explanation for every choice
A
Introns are removed before translation.
B
Polycistronic mRNA, encoding several proteins on one transcript, is typical of prokaryotes.
C
Each transcript is made from one template strand.
D
Correct. Different combinations of exons produce different mRNAs and protein isoforms.
TakeawayDifferent exon combinations → different protein isoforms.
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Reviewed 2026-11-05 by a medical student. Spot an error? Report it with question ID bb42.