[OPEN] Offsprings Human/Occult always result in Occults

I only have spellcasters, humans, and mermaids in my game so far.

Second generation (both with human fathers)

• Spellcaster had 3 spellcaster children
• Mermaid has now had 8 mermaid children (I try for baby every time they get a whim to, if there is room, and use age down potions to keep them from being elder until at least their oldest is an adult or the youngest is a teen if the oldest isn't an adult)

I assumed this was because I had made the spellcaster both the Spellcaster and Mermaid in CAS and their husbands were townies.

Third generation:

1. Mermaid with CAS-made mermaid husband (I had a story for her in my head and none of the townie mermaids would fit) has had three mermaid kids, to be expected.  Two new babies were born after I rotated out.  I don't know what they are, but I'm assuming mermaid.
2. Spellcaster mom with human father who was second gen from another played family of humans: 5 kids - 3 casters and two non with strong bloodline trait
3. Spellcaster mom with townie human father:  kids - 3 casters and two non with strong bloodline trait
4. Spellcaster mom with townie human father: kids - 3 casters and one baby that is still a ?  She was the last of that generation to start having kids

3rd gen one parent, 4th generation the other (the mermaid second-generation intermarried heavily with the first spellcaster born to the third-gen )

1. Mermaid mom and human father with strong bloodline trait: one human daughter with the weak bloodline trait, one baby that is still a ?
2. Mermaid dad and spellcaster mom: two daughters, both mermaids have the ancient bloodline trait, one baby that is still a ?

4th gen of spellcaster:

1. Human with strong bloodline trait
   1. Abduction: human baby with weak bloodline trait.  I read somewhere that this might be a bug, the bloodline trait blocking the alien trait somehow.  The child looks fully human.
   2. Alien wife: 3 alien hybrids the color of their mom with, but all with the weak bloodline trait and another baby that looks to be an alien hybrid that will probably also have the blood line trait.

Attaching the file

I don't know when I started playing this game, but I think I was already working on third-generation when I picked it back up this past January.  I'm copying my save folder to a new location because I'm worried of something be screwed up if I link the save I'm actually playing.

https://1drv.ms/u/s!AmfCqRb23xN-i7kAC00wNPjgq8yXDw?e=yfk3Xs