Molecular patches skip a faulty gene segment

In the picture

1. 1A green clamp-like molecular patch bound to a grey spacer block on the strand
2. 2A cracked red gene segment between the two patches
3. 3A scissor-shaped enzyme at the cut junction beside the red segment
4. 4A shortened folded protein chain in the cytoplasm outside the nucleus

Examples

• A film editor removes one damaged scene so the rest of the movie still plays.
• A train route skips a closed station and continues to its destination.

Quiz: Molecular patches skip a faulty gene segment (Age 18)

1. 1

   What do molecular patches do to the faulty gene segment?

   • They repair the mutation directly in the DNA.
   • They mark it so the splicing machinery skips it.
   • They replace the whole gene with a new copy.
2. 2

   After the faulty segment is skipped, what does the cell build?

   • A full-length protein with the faulty segment repaired.
   • A shortened protein that can still work.
   • No protein at all.
3. 3

   Why can exon-skipping therapy reduce the effects of the mutation?

   • Because the molecular patch becomes part of the final protein.
   • Because the faulty segment is removed from the DNA itself.
   • Because the shortened protein can keep enough function.

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.