Scientists
study families a lot, because it’s an extremely important human unit
both socially and genetically. How different or alike are siblings? How
does birth order affect your life? Studies like this help to determine
which traits are genetic and which are learned. Sometimes those things
are hard to separate, since families not only share genes, but also
learn from each other. We also have new research about how families have
changed over time. John Green has some really interesting findings
about families this week’s episode of the mental_floss List Show.
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