In this chapter, we focused on how eukaryotic gene expression is regulated posttranscriptionally. At the same time, we found many opportunities to consider the methods and reasoning by which much of this information was acquired. From the explanations given in the chapter:

How do we know that alternative splicing enables one gene to encode different isoforms with different functions?

Video transcript

Hello everyone here. We have a question asking, how does alternative splicing regulate gene expression? Alternative splicing regulates gene expression by specifying the ICE forms with functions specific to the sales they're expressed. And this was discovered by observing the Drosophila MHC gene, which encodes a motor protein necessary for muscle contraction. The different ICE A forms of this protein are expressed in different types of muscle and they slightly differ in their contract I'll properties. So our correct answer here is B. They specify the ICE A forms with functions specific to the cells where they are expressed. Thank you for watching. Bye!