Question

Humans contain about 20,000 genes but can make 75,000- 100,000 different proteins. The most likely explanation for this is:

Answer 1

Alternate Splicing of Exons

Step-by-step explanation:

Proteins are able to out genes in eukaryotes, partially because cells can make unique RNA variants from the same genes via "alternative splicing," which leads to mRNAs that code for numerous combinations of components from the original gene!

Answer 2

The most plausible reason is pre-mRNA alternative splicing. Alternative splicing permits several exon combinations to be incorporated in the final mRNA, resulting in the creation of many protein isoforms from a single gene. This dramatically increases the number of proteins that can be made from a small number of genes. Furthermore, post-translational changes to proteins can boost the proteome's diversity.