Calm down.
Regardless if they are 5 weeks, 7 or 9, all plant look "tiny" in every way just as you said first. Everything about them is small, leaves, structure and branches.
If you had experience you would see this right away but I do suspect you are actually aware of this fact because you mentioned "tiny" first and also by your reaction.
What you have taken a picture of is fine but rgarding size but that is just 1 leaf on 1 plant whilst the others are all "tiny" just as you said. The fact is that all the leaves do not look at all like the biggest one you have hand selected out the thousands.
As for genetics, I never mentioned that word, you did. I'm just saying that whatever week they are in, they are generally "tiny".
You tell me what you know about genetics and why that popped in your head without mention?
Like I said, at that age and whatever you have fucked about doing to them, they just don't look the part and don't look strong enough to actually carry decent bud.
Sorry if I upset you but its shit when you waste time and the end product could be disappointing.
Anyway, what the fuck do I know, I've only been growing a few decades.