Human genetics is the branch of biological science that studies heredity, variation, and the transmission of genetic characteristics in human populations. It examines how genes are inherited from one generation to another and how genetic and environmental factors interact to influence human growth, development, behavior, health, and disease. Human genetics is closely associated with anthropology because it helps explain human evolution, biological diversity, adaptation, and population history. In comparative ethnography, knowledge of human genetics complements cultural studies by providing insights into the biological aspects of human populations while emphasizing that genetic differences do not determine cultural superiority or inferiority. It contributes to understanding the relationship between biological inheritance and cultural diversity across societies. Human genetics is based on the study of DNA, genes, chromosomes, mutations, and patterns of inheritance. Every human cell contains 23 pairs of chromosomes, which carry thousands of genes responsible for physical and physiological traits. Variations in genes contribute to differences among individuals and populations, while mutations may lead to inherited disorders or provide the basis for evolutionary adaptation. One important branch is Cytogenetics, which deals with the structure, number, and behavior of chromosomes. It examines chromosomal abnormalities such as Down syndrome, Turner syndrome, and Klinefelter syndrome. Cytogenetics employs techniques like karyotyping and chromosome banding to detect genetic disorders and understand chromosomal evolution. Molecular Genetics focuses on the molecular structure and function of genes. It studies DNA replication, transcription, translation, gene regulation, and mutations. Modern techniques such as