I am an amateur or beginner in the field of bioinformatics. Related to one of my recent projects I need one help.
I used McGee Y utility software to calculate Genetic Distance for the Y DNA data obtained from FTDNA. With the output file in phylip format I created a phylogenetic tree using MEGA v6. I need to put the scaling in years in the phylogenetic tree (as found in the HAM project- link given). Can anyone help me by telling how to calculate and represent these kind of scale in a phylogenetic tree. Is this by approximately putting values using the data got from Time to most recent common ancestor table or from any other calculation?
Kindly note the scale bar given in years (Years ago) at the bottom of the phylogenetic tree http://home.earthlink.net/~odoniv/HamCountry/HAM_DNA_Project/HAM_DNA_charts.html