I think this is ripe for comedy.
Speaking toward the future, there is already talk of male contraception (birth control). Men will perhaps also carry embryos to partum one day. I think that would be the next conclusion found. However, I can’t see this is as viable based on nature’s gender roles as currently intended.
CNN isn’t exactly my favorite new source but here is the very brief article if you want to read.
There is nothing in the article about men carrying embryos to term but just my take. Someone is going to tell me to go on pubmed and pull the Nature article I know it. (Nature was like the top journal a few years ago, so you know this is legit).
http://www.cnn.com/2016/09/14/europe/mice-sperm-reproduction-eggs/
(I think this is ripe for comedy.)