Trying to think if I dealt with anyone where there was a mum and dad in home and mum went to jail. It's not as common by far.
Last year, I worked with a child in this position. The only one I have known. So this really doesn't mean it's the case for all!! This is just my experience.
The dad seemed to be doing much better(mentally) than most of the women I see in this situation. We work closely with families so hear and see a lot. Most of the mums are keeping everything running happily for their children but once away from them, they are broken, worn out, upset, sad, lonely etc
The dad I worked with told me that while he is stressed or tired sometimes, he doesn't feel like breaking down, it's not effecting him as badly as people kept saying it would and he just doesn't feel or get very emotional about it. He just goes to work, makes the dinner, does the homework etc and carries on each day.
But when we speak with the women in that position they talk about how they cant stop thinking and worrying and imagining the worst. (Their kids tell us that they hear mum cry sometimes, mum believes the kids have never seen/heard her cry)
We all know many men are generally less sensitive about things and less emotional(something that used to bother me quite a lot about men) but in this particular situation, it really worked for this man.
Im going to repeat, Of course this doesn't mean it's the case for all! Just my experience. That was just one man.
But for all the women we see in this situation, they seem to keep it together for the kids but then fall apart themselves.