Haplogroup P1, also known as P-M45 and K2b2a, is a Y-chromosome DNA haplogroup in human genetics. Defined by the SNPs M45 and PF5962, P1 is a primary branch (subclade) of P.

But not all studies agree on the point of origin. The Levant has been proposed but a 2010 study concluded that the haplogroup had a more northern origin, possibly Anatolia. In Y-chromosome ...

The X chromosome, comprising roughly 155 million DNA base pairs ... Within the last 166 million years, the human Y chromosome ...

Social media is buzzing with a new phenomenon in medical science — the disappearing Y chromosome. For the uninitiated, the sex of human and other mammal babies is determined by a male-determining gene ...

T he Y chromosome, a small but crucial part of human DNA, plays a vital role in determining the sex of babies in humans and ...

Males have an X and a Y chromosome (XY) while females have two Xs (XX). The human X and Y chromosomes evolved from a pair of autosomes approximately 180 million years ago. Despite their shared ...

Chromosome 21 is the smallest autosome, comprising only about 1.9% of human DNA, but represents one of the most intensively studied regions of the genome. Much of the interest in chromosome 21 can be ...

Genes are sections of DNA (deoxyribonucleic acid) that are found inside every human cell. They’re so tiny that they ... Females have two X chromosomes and males have one X chromosome and one Y ...

Should be of broad interest to anyone interested in human history. To appreciate these problems, we first need to consider two main approaches that were utilized to study demographic history with AGs.