In case you’re having a bad day, here’s baby Beaker singing.
About Jonas Quinn. Even though we were never actually told in the show, I'm like 99% sure that boy is an orphan. There's never any mention of his family. Not once. So I have this headcanon that his parents died when he was fairly young and that his professor back on Kelowna was the closest thing he had to family before Earth. Hence the whole theme of Jonas and father-ish figures, and the sibling bond between him and Sam.