The Genesis of Yevamoth

Yehuda and Tamar, of course. Dealt with Yevomoth 34B

But how about Lot and his daughters?

Was this a kind of early attempt to preserve the name of one cut off from offspring? And doesn't the act of his daughters accomplish that? Amom and Moav are names that live to this day!

The story of Lot and his daughters also has relevence to the question of the yibim act while asleep! ( Yevomoth 54) I wonder why the gemmarah ignores it?

Then there is the curse of ariri for marrying a sister. Yevomoth 55)

Who calls himself ariri? Avram. Who married his sister?