Haplogroup
A haplotype is a group of alleles in an organism that are inherited together from a single parent, and a haplogroup (haploid from the Greek: ἁπλοῦς, haploûs, "onefold, simple" and English: group) is a group of similar haplotypes that share a common ancestor identified by a particular single-nucleotide polymorphism (SNP) mutation. More specifically, a haplotype is a set of closely linked alleles that tend to be inherited together.