I read the wikipedia passage on overlapping genes.
The Tandem overlaps they speak of make sense to me, as I understand that their are different reading frames(3 in total if I understand correctly) for genes to be read in the 3' to 5' direction and that this causes an out of phase overlap.
This out of phase tandem overlap for genes was shown by the picture below:
I am having trouble understanding the other scenarios spoken about in the passage, the in-phase tandem overlap and the Anti-parallel strand overlaps. Maybe I just lack a good enough background in genetics.
I do not understand how you can have an in-phase tandem overlap. If the genes were in phase, how could they ever overlap and be different genes? Wouldn't they both respectively have a stop codon, and then one stop codon would "stop" the translation?
I picture it like this: pardon the crude drawing
The anti-parallel strand overlaps also confuse me as well, for I do not understand how genes can overlap when on opposite strands. If the genes are on opposite strands wont that mean they wont have any overlap in the first place? Am I missing something basic? Thanks.