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Birthplace exogamy

Posted Over 1 Year ago by chiarizio

I want a way to make Y-chromosome haplotypes and mitochondrial-DNA haplotypes spread around the world.
One way to do it might be a sort of conditional and partial “birthplace exogamy”.

Consider the following two rules.

1. If a man has two or more sons who were all born within a day’s travel of the man’s own birthplace, then at least one of those sons must move and settle further than a day’s travel away, and marry a local girl.
2. If a woman has two or more daughters who were all born within a day’s travel of the woman’s own birthplace, then at least one of those daughters must move and settle further than a day’s travel away, and marry a local boy.

At a Phileas Fogg pace of 500 km a day this would make each haplotype travel to the antipodes in 40 generations and then return in another 40; thus going around the world in 80 generations.

Going by automobile etc. one could circumnavigate these days in 25 days. So one’s haplotypes could spread to the antipodes in about 12.5 generations and return in the next 12.5. That might be about 200 to 400 years? I guess?

Going on foot one could travel an average of probably about 20 miles in a day. That’d be around the globe in about 1250 days. One’s haplotypes could reach the antipodes in 625 generations. That’s a lot of generations. Probably 54 to 108 centuries. Lots of time for racial gradients to develop in my opinion.
And I really think the on-foot thing would really average closer to 9 miles (or maybe 9 nautical miles) per generation.

To get to the antipodes in 3 to 6 generations we’d need a day’s travel to be more like 3,333 kilometers or 2100 miles or 1800 nautical miles. That might take anywhere from one to two centuries, I guess. At that speed of travel this policy might produce enough miscegenation to make it obvious that race no longer existed; that the entire planet was populated by just one human race.

I don’t think we’d need air-travel speeds.

But if one could travel a quarter or a third of the way around the globe in a day, a policy such as this would effectively eliminate any sharp divisions between races in three or four generations, unless I’m wrong, and missing something; which is possible.

Using locomotives and steamships I’m not certain this would produce enough mixing of haplogroups to obviously eliminate racial distinctions.
Without steam powered locomotives and ships I think one could not make everyone look like they all came from the same race; but they could make it clear that differences between races were gradients.

There are 5 Replies


2100 statute miles per day (3333 kilometers per day or 1800 nautical miles per day) is slightly faster than twice as fast as travel by automobile or bus over Interstate Highways and US Highways in modern times.
We’d need the entire globe to be connected by stuff like bullet-trains and autobahns and so on; or we’d need airlines after all; to have a day’s journey cover such a distance.

Over 1 Year ago
chiarizio
 

We might go further.
Say, if a man has three or more sons all born within a day’s travel of his and each others’ birthplaces, at least two of them must move at least a day’s travel away from the birthplaces of any of them,
and at least a day’s travel away from each others’ residences,
and marry local girls.
And/or, if a man and two or more of his sons and four or more of his sons’ sons are all ... etc., then they have to all spread out at least a day’s travel away from each other.
Etc.

And the same way with a woman and three or more daughters, or two or more daughters and four or more daughters’ daughters.

Or something like that.

Over 1 Year ago
chiarizio
 

The places for a man to move and settle and find a bride at least a day’s travel away from might include the birthplaces and graves and residences of any patrilineal descendants of any patrilineal ancestors up to n generations distant for some n.
It might also include where they got married or stuff like that.

Likewise the places for a woman to move and settle and find a groom at least a day’s travel away from might include birthplaces and graves and residences of any matrilineal descendant of any matrilineal ancestor up to n generations distant for some n.
Or some modification of some such idea.

Over 1 Year ago
chiarizio
 

At 160 kilometers (or 100 statute miles) per hour one could travel about 0.096 (almost 0.1) of the way around the world in 24 hours.
Assuming one could keep up that speed (3840 km or 2400 mi per generation) for that long regardless of terrain, then one’s haplotype could reach the antipodes in something a little fewer than 5.21 generations, and circum”navig”ate in less than 10.42.
Eleven generations probably would take at least 220 years but not more than 275 years. Almost surely not less than 184 years nor more than 367 years.
I don’t think we’ve been able to travel that fast for that long yet; but if our technological and industrial civilization continues to last for that long, we’ll probably reach a point where it’s clear to everyone that only one race is left, namely, all humanity.

Over 1 Year ago
chiarizio
 

It may turn out to be important that so far I’ve been talking only about distance, and not at all about area. So far!

Over 1 Year ago
chiarizio
 

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