No, because two creatures with similar niches can evolve similar traits and appearances despite not having a common ancestor.
To be honest, since we live on Earth (assuming you do as well), Earth is the easiest planet to study. We don't know much about the other planets because we've never been to any of them. I believe that the second easiest planet to study is either Uranus or Saturn.
For males, they are produced in the Testes or male testicle.
Answer:IDK
Explanation:be as I'm only 10