Final answer:
Alternative splicing of heavy chain gene transcripts leads to the production of antibodies with unique variable regions capable of binding different antigens.
Step-by-step explanation:
When mRNA splicing of heavy chain gene transcripts occurs and produces the delta chain as well as the mu chain, this leads to the production of different forms of antibodies. Alternative splicing of heavy chain gene transcripts leads to the production of antibodies with unique variable regions capable of binding different antigens.
The process is known as alternative splicing, where different mRNA transcripts can be produced from the same gene by removing or including different sections of the RNA. In the case of antibody production, alternative splicing leads to the synthesis of antibodies with unique variable regions capable of binding different antigens.