No that is not true, there are genes that does not contain protin coding segments. There is no clear definition where a gene starts and ends. Some define it as

No that is not true, there are genes that does not contain protin coding segments. There is no clear definition where a gene starts and ends. Some define it as a segment that codes for a specific feature but that is a recursive definition. Here is an article about what I mean: https://www.gmwatch.org/en/news/archive/2000/8975-genetic-determinism-is-dead-theres-no-such-thing-as-a-gene-27122000 https://www.gmwatch.org/en/news/archive/2000/8975-genetic-de...