On what basis would we answer them? The assumptions that arise in traditional genetics go out the window when divine impregnation is involved, and there is very little in the way of descriptions of either Jesus or Mary that would allow any sort of substantive discussion on the subject.
Probably the oldest depiction of Jesus (from 235 AD) shows him as a beardless, youngish man with short hair. I don’t know how much of this appearance he inherited from his father.
Probably, the best descriptions that we have of Jesus would be any tidbits in the Gospels and - to make an assumption - a description of his brother, James the Just:
James continued to lead the Jerusalem school of Jesus, after his death, and there’s a variety of reasons to believe that Jesus ascribed to an ascetic school of thought (see below). So it’s not surprising to see descriptions of non-bathing, natural-length hair, and torn up knees from begging and praying. We should probably assume that Jesus was the same.
There’s no particular note, in the Bible, of Jesus being paler than anyone else around him or sticking out in an extreme way - like being 8 feet tall or glowing in the dark. During his trial, the people are described as laughing that someone would think that “that guy” is the Son of God, and they chose some other guy to vote to save the life of.
We do have some notes of dark skin. If, again, we assume that he was out begging and praying, regularly, then it would be fairly likely that he was pretty sun-tanned so that would seem to match the Biblical descriptions.
Reasons to believe that Jesus was an ascetic:
His brother, and the person who continued to lead the disciples in Jerusalem after his death, is described as such.
Christian regions in Israel, Syria, Egypt, and Northern Africa taught asceticism for the centuries following Jesus’ death. These are the places that Jesus’ apostles, who actually met and learned directly from him, were wandering and spreading their message. This only seems to stop as the Roman church becomes dominant in those regions.
Paul describes having to convince Christian churches in Turkey to stop trying to practice asceticism (saying that it was only required for priests, not lay believers). This implies that someone else was telling them that they should practice asceticism and they were confused on the subject. This would make sense if we view Turkey as being on the border of the Roman and the Jerusalem churches, and receiving different messages from the two directions.
John the Baptist, who Jesus describes as following similar systems, was.
Probably not. I don’t buy into the divinity of it all, but he was one of many wandering prophets in Palestine at the time. He just had better PR post mortem in Paul. Were it not for Paul, the Christian sect would probably be on par with the Samaritans today.
The closest model, I think, is that Mary was an Ant. Even though the male ant only gets its genes from an unfertilized mother, they can look quite different (looking at pictures anyway).