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population genetics
Y-Chromosome DNA Analysis: Tracing Paternal Lineage Through Genetics
Y-chromosome DNA analysis examines markers on the Y chromosome to trace paternal lineage, assign haplogroups, and identify males in forensic casework.
Mitochondrial Eve: The Maternal Ancestor of All Living Humans
Mitochondrial Eve is the most recent woman from whom all living humans inherited their mitochondrial DNA through an unbroken maternal line, a statistical...
Sickle Cell Trait Evolution: How One Mutation Defends Against Malaria
Sickle cell trait evolution is the persistence of a hemoglobin mutation in human populations because carriers gain partial protection against malaria, the deadliest...
Gene Drive Technology: Engineering Inheritance to Fight Malaria
A gene drive is a genetic engineering system that biases inheritance so a chosen trait spreads through a wild population faster than Mendelian...
Genetic Drift: How Random Chance Reshapes Evolution
Genetic drift is a change in allele frequency within a population caused by random sampling rather than natural selection. It affects every finite...
Founder Effect: How Small Groups Shape Genetic Destiny
The founder effect is a type of genetic drift in which a small group separates from a larger population and establishes a new...
Bottleneck Effect: How Populations Lose Their Genetic Diversity
The bottleneck effect is a form of genetic drift in which a population's size drops sharply, leaving survivors with only a fraction of...
Viking DNA: What Ancient Genetics Reveals About Modern Scandinavians
Modern Scandinavians carry Viking ancestry, but genetic research reveals the story is more complex than national myths suggest. The Black Death and subsequent...
