A haplotype is a group of genes or genetic markers that are inherited together from a single parent. It represents a specific combination of alleles at multiple loci on a chromosome. Haplotypes are important in genetics because they can help trace lineage and understand genetic diversity within populations. Researchers often use haplotypes in studies related to human genetics, population genetics, and disease association. By analyzing haplotypes, scientists can identify genetic variations that may contribute to certain traits or health conditions, aiding in the development of personalized medicine and targeted therapies.