How to get pure family on v5?

So, I'm working on a Mame family. I've got a few questions about it.

1. If I have 100% bonding and I always select the first option in the training menu, is it 100% sure that my Mousetchi will become a Mamekatchi and my Mamekatchi will become a Mametchi?

2. Is it 100% sure that if my Mametchi will marry a Chantotchi at the dating show, they will become a pure family?

3. Do Mametchi and Chantotchi always have 2 or 1 eggs?

4. If I have 2 or 1 eggs, is it 100% sure that eggs will become Mimifuwatchis?

I know I asked very much but if somebody knows answers to these questions or even 1 question, PLEASE tell me. Thank you!

Ok I'm really sorry but I dont't have answer to #1 but I think I can help you on the other questions.

It is 100% sure that if you marry a Mametchi to a Chantotchi on the dating show you WILL get a pure family.

Mametchi and Chantotchi will have 2 eggs and I'm not really sure what they hatch into at baby form.

Even though I didn't answer all the questions I hope I helped a little bit!

1: Yes. At least, I'm pretty sure it's 100% certain.

2: Yes again.

3: Yes. Their baby forms should both be Mimifuwatchi (one male and one female) if I remember correctly.

4: I think it's 100% sure. I don't quite remember.

Thank you really much you helped a lot! Woohoo!!