I think when you compare men and women together, the breakdown of nature vs. nurture is probably something like 50/50 where 50% is nature and 50% is nurture; however, I believe women are more prone to nurture and men less prone. I would surmise that for men, it's more like 80%/20% nature/nurture and for women, it's more like 20%/80% for nature and nurture.
I think this is why women are far more likely to take a nurture/culture influences everything stance whereas men are less likely to take this stance than women. Women are projecting themselves onto their belief. For women, nurture plays a huge role. This is also why women are more likely to be permanently damaged by their past influences, whereas men are far more likely to get over past trauma. For women, this trauma shapes them entirely (80% of their being is shaped by their past) but for men, it does not (only 20% of a man's being is shaped by his past).
Obviously though, this 80/20 between men and women varies with some men probably being closer to 20/80 and some women being closer to 80/20 but on a normal curve where the mean is 80/20 for men and 20/80 for women.
I think in the question of nature/nurture we need to look at it more through the lens of a gender bias. The lack of gender evaluation of nurture/nature causes significant issues.
For example, when it comes to immigration, many White people think we can bring in military aged males and just "educate" them but it doesn't work that way. On the other hand, we might be able to bring in young girls and "educate" them BUT it would make sense to neuter the women so they cannot procreate, otherwise their genetics carryforward to possibly create a man who would then be inferior and no amount of culture could correct for it.
I wonder if anyone has any data on my hypothesis? I'm pretty sure I'm probably right but I don't have any data to support it. Essentially the Y chromosome is likely the "static" variable that creates this unchanging essence of the man "nature" and the X chromosome is the one whose nature is more easily influenced by the environment rather than the internal program. That would be my hypothesis anyway.
Not only do families have a built in incentive for peace and stability, they have a much bigger disincentive to fuck around, because their wife and kids also find out.
Further, the kids are raised in their culture and are much more likely to return to their ancestral homeland if they aren't useful than they are to hang around collecting welfare.
Importing young singles *will* lead to micegenation.