Are our ancestors soul heritable part of evolution?

there's no evidence to suggest that souls even exist, much les that they are heritable... why did you think there'd be an answer to this?


the Maori people of the pacific belived that Mana (the spirit of their ancestors) is passed down through generations to the clan's warriors

It depends on what you believe. Souls to many different cultures mean so many different things.

But in one light we have a part of every single one of our ancestors within US. Going back to the scientific side. Hundreds of people had to come together to make us. Even though we may not look like them there is a part of everyone one of them locked away  somewhere in the maze of genetic coding.

Put it this way. Your parents had you. 2 people had your mom. 2 people had your dad. 2 people had your mom's mom. 2 people had your mom's dad.  2 people had your  mom's dad. 2 people had your mom's mom. and it goes on!...
If you go back 8 generations alone... 256 people all together had to come together. According to NPR = 2X  Parental Relations formula.