Do children pick up their parents mannerisms?

Some are in DNA, my husband has jumpy legs and I noticed my son having this as a baby when old enough to sit up, he wasn't old enough to be thinking in a way to copy my h/b.

I worked with a girl who separated from her sons father before he was born and her son only ever sees the dad once every few weeks, she told me that since he was a small child her son did this thing with a zip on his hoodies pulling it up and down in a certain way and tugging at it and pulling the labels off in the exact same way that her ex b/f did.

I noticed myself holding my hands in a certain way over my mouth when sitting silently like the way my mother used to.. But I always hated that when she did it, it in my opinion looked awful so I have made deliberate attempts over the years to not do this and switch my movement to something else and I've broken the habit.. I do notice perhaps if I'm tired I might do it when not thinking.

ANYWAYS>. sorry for the humongous answer.. I got carried away..