Join Date: Dec 2010; Location: Eastern Washington State, USA; Posts: 63,050: Post Thanks / Like present in Y sperm along with the slightly smaller Y chromosome). 3) X sperm are strong and live a long time and Y sperm are weak . X and Y sperm was fount to be inaccurate (VanKooij and VanOost
10 Sep 2014 Y chromosome Substitution rate Demographic history Lineage dating kind of mutation rate to be used in Y chromosome dating is controversial, . an African American individual and the Mbo population living in Cameroon.