Sex in Relation to Chromosomes and Genes

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In Calvin Blackman Bridges
That same year he published “Sex in Relation to Chromosomes and Genes,” demonstrating that sex in Drosophila is not determined simply by the “sex chromosomes” (X and Y) but is the result of a “chromosomal balance”—a mathematical ratio of the number of female sex chromosomes (X) to the number of…
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