I wonder how much differing teenage pregnancy rates reflect different biological Age at First Reproduction https://www.ppin.org/education/documents/adolecent_preg_fact_sheet_06.pdf …
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Replying to @sarahdoingthing
Teen pregnancy rate for US, Canada, Australia (even restricted to whites) higher than home euro pops, intense selection for lower AFR
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Replying to @sarahdoingthing
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@sarahdoingthing Selection (pioneer colonization) plus huge amount of sorting.1 reply 0 retweets 2 likes
Replying to @JayMan471
@JayMan471 Yep, totally - sudden explosion of population under selection for lower AFR
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