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Genetic Variation Within and Between Racial Categories
Racial categories are largely irrelevant to studying human genetic diversity because there is more genetic variation within any given racial category than there is between different racial categories.
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Psychology @ OpenStax
Introduction to Psychology @ OpenStax Course
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OpenStax Psychology (2nd ed.) Textbook
Psychology
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Fertilization
Human Fertilization Process
Traits
Consider two isolated populations of a species. Population A exhibits a wide range of genetic differences among its members, while the individuals in Population B are genetically very similar to each other. If a novel and deadly disease emerges and spreads to both populations, which of the following outcomes is the most probable, and what is the underlying reason?
A researcher is comparing two pairs of siblings to understand the biological basis for differences in their psychological traits. Pair A consists of identical twins, who developed from a single fertilized egg. Pair B consists of non-identical (fraternal) siblings, who developed from two separate fertilized eggs. Why would the researcher expect to find a greater degree of genetic variation between the two individuals in Pair B compared to Pair A?
Importance of Genetic Diversity
Race in Genetic Research
Genetic Variation Within and Between Racial Categories
Clinical Consequences of Focusing on Race in Genetics
Distinguishing Ancestry from Race