Definition: Discrete strands of tightly packaged chromatin. Related Vocabulary: AllosomesAutosomesChromatinMitochondrial DNASymposia: Ancient DNA and Human EvolutionCARTA 10th Anniversary: Revisiting the AgendaCellular and Molecular Explorations of AnthropogenyExploring the Origins of Today's HumansExtraordinary Variations of the Human Mind: Lessons for AnthropogenyImpact of Infectious Disease on Humans & Our OriginsImplications of Anthropogeny for Medicine and Health