Sorta kinda. There seems to be a mechanism where we're less likely to be attracted to people we grew up with, like in the same household with, but it's not 100%.
But there's no mechanism that makes you recognize that you're closely related to them on sight. It's mostly cultural taboos that keep people from marrying their siblings or first cousins. Marrying siblings is very rare afaik, but first cousin marriage has showed up all over the place, including European cultures until like the 19th century.
If it isn't 100% it's really, really close. Authentic attraction between family members who grew up together is basically unheard of. Every incestuous relationship that isn't entirely one-sided grooming is between estranged relatives.
Sorta kinda. There seems to be a mechanism where we're less likely to be attracted to people we grew up with, like in the same household with, but it's not 100%.
But there's no mechanism that makes you recognize that you're closely related to them on sight. It's mostly cultural taboos that keep people from marrying their siblings or first cousins. Marrying siblings is very rare afaik, but first cousin marriage has showed up all over the place, including European cultures until like the 19th century.
If it isn't 100% it's really, really close. Authentic attraction between family members who grew up together is basically unheard of. Every incestuous relationship that isn't entirely one-sided grooming is between estranged relatives.
: p Being a Ptolemaic Egyptian royal must have sucked, then.