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the red marks tended to cluster toward the right, while the unmarked men tended to cluster to the left. Gay men tended to have gay uncles—but only on the maternal side. The more Hamer hunted up and down the family trees for gay relatives—a “gay Roots project,” as he called it—the more the trend intensified. Maternal cousins had higher rates of concordance—but not paternal cousins. Maternal cousins through aunts tended to have higher concordance than any other cousins.
