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The Sand Creek massacre of 1864
Gene
A unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
X Chromosome
One of the two sex chromosomes, X and Y, with the X chromosome carrying genes essential for the development of female physical characteristics and playing a role in male development as well.
Brain Development
The process by which the nervous system, including the brain, grows, matures, and learns, starting from before birth and continuing into adulthood.
Heritability
A statistical measure that indicates how much of the variation in a given trait within a population can be attributed to genetic differences among individuals.
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