Are father daughter relationships forbidden under 7 laws of Noach?

Question

Under the sub laws of Noach

http://noahide.org/wp-content/uploads/2017/04/The-Noahide-Dinim-sub-Laws.html

8 "Against [a man] lying carnally with his father." Negative Mitzvah 351 Leviticus 18:7 "Do not act immodestly with your father"

Although I'm not sure if this also means it's prohibited for a daughter to do the same, and in the other relations mentioned there I didn't see a mention of a original for father to daughter, only from son to mother

So is it prohibited to bnei Noach, or not? I wasn't able to find an explicit source

Thanks

Answer 1

There's a dispute in Sanhedrin exactly which relationships are forbidden to Benei Noach.

Sanhedrin 58b brings the following statement of Rav Hunah:

אמר רב הונא כותי מותר בבתו

Rav Huna says: A gentile is permitted to marry his daughter.

Rashi there explains that this statement is according to all opinions. The Ein Mishpat there cites the Rambam (Hilchos Melachim 9:5, Hilchos Issurei Biah 14:10), who lists all the prohibited relationships to Benei Noach. He didn't list marrying a daughter. The Ein Mishpat therefore understood that the Rambam ruled like Rav Huna. The Maharsha there also says this.