Why are you calling them a person when they prefer male and female pronouns?
Because I'm talking about people and conception generally, not about this specific case. The gender of the individuals involved in conception doesn't matter. All that matters is that fertile love cells meet in a hospitable environment.
IVF for example is still a conception, even though it doesn't require the presence of a snake, nor even a uterus to begin with.
Because by definition a man can't give birth and a woman can't Impregnate and that's why you chose to say person instead because it would have contradicted your point otherwise lol.
The definition of man/woman is not based on which can give birth, or which can impregnate.
Consider the male seahorse, which gives birth to its young, despite providing the sperm in the conception.
The definiton of man/woman is based upon the chromosomes they have. That's all.
