This happens to both genders, but it needs to stop. The expectation that it is your role to do certain things and that you were born liking them.

For women, it's cleaning, cooking, child-bearing, etc. For men, it's auto and home repair, any other form of manual labor, killing bugs, etc. It's gotten so bad that while at work, a female co-worker (not a tiny girl) will call me over to pick up a 5lb box. I know she can lift 5lbs and it's even one of our job requirements to be able to lift well over that, but any sort of lifting has become synonymous with 'get a guy to do it' here.

One time there was a bug and someone walked up to me while I was eating lunch and told me that there was one 'you need to go kill'. Didn't ask and didn't mind that I was eating. A female co-worker nearby who is awesome said that she could kill it and was told by the other coworker that she didn't have to and to just leave it for me. I politely told her later that I felt that it was a little sexist and she said that killing bugs was simply something that men were good at.

See, I help clean my house. I cook more than my SO. If we had kids, I'd help every bit of the way. I don't walk around asking my female co-workers to make me a sandwich because it's 'something that women are good at'. Expectations like these need to stop.