Y-chromosome haplogroup A (M91) (Africa, especially the Khoisan, Ethiopians, and Nilotes). In human genetics, Haplogroup A is the lineage of most human males. No mutations define Haplogroup A, but since this nomenclature only deals with Homo sapiens, the hypothetical "Y-chromosomal Adam" can be considered its founder.
Lychee on tree : Delicious and juicy lychee or "Litchi" heralds you the arrival of summer.Besides sweet and nutritious, the berries have cooling effect on the human body. Botanically, this exotic fruit belongs to the family of Sapindaceae and named scientifically as Litchi chinensis.