How are genes and transcripts organized?

Question

[Ruijiang HAN]

A gene usually has multiple transcripts. What makes these transcripts assigned/organized/aggregated into one gene? Why are the two genes overlapping on the chromosomes not assigned to one gene?

[antonioggsousa]

This is not a bioinformatics question, but anyway, what it makes a gene a gene is a serial of structural elements, such as a promoter region upstream the gene, start and stop codons among others.

This wiki gives you a good insight.

António