I've recently started using Ensembl for help in designing a gene panel for NGS.
Each time I select a gene on Ensembl it comes up with different available transcripts for that gene.
What defines a transcript? Is it literally just a different version of the gene in different individuals (but if so, how come some of the transcripts appear to be so different in terms of bp length and amino acid number)
Any help in explaining would be most gratefully received!