Simplify the following text for a Grade 10 native English-speaking person.
Original: Alternative splicing of introns within a gene acts to introduce greater variability of protein sequences translated from a single gene , allowing multiple related proteins to be generated from a single gene and a single precursor mRNA transcript .
Simplified: Alternative splicing of introns within a gene allows a variety of protein isoforms from a single gene . Thus multiple related proteins can be generated from a single gene and a single precursor mRNA transcript .