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Males sharing matrilineal line mitochondrial DNA

Females sharing matrilineal line mitochondrial DNA

Males NOT sharing matrilineal line mitochondrial DNA

  Females not sharing matrilineal line mitochondrial DNA

The Path of Mitochondrial DNA Through Four Generations (above)
Male sharing Y chromosome from common ancestor
Male with Y chromosome from outside the patrilineal line
Females--have NO Y chromosome

The Path of Y Chromosome DNA Through Four Generations (above)

Barring a rare mutation, boxes filled with dark red would be expected to have identical values for all Y chromosome markers.  Studies of nearly 5000 father son pairs showed only 14 mutations between the two generations with only one of those being a two step repeat and 13 being an increase of only one repeat of one marker.

Kayser, Manfred, Lutz Roewer, Minttu Hedman, Lotte Henke, Jurgen Henke, Silke Brauer, Carmen Kruger, Michael Krawczak, Marion Nagy, Tadeusz Dobosz, Reinhard Szibor, Peter de Knijff, Mark Stoneking, and Antti Sajantila,  Characteristics and frequency of germline mutations at microsatellite ;oci from the human Y chromosome, as revealed by direct observation in father/son pairs.  Am. J. Hum. Genet. 66: 1580-1588, 2000
http://www.journals.uchicago.edu/AJHG/journal/issues/v66n5/991495/991495.html
 

Where Can I Go From Here?? 

Contexo Home Page ] Introduction ] Basic Chemistry ] Cell Chemistry ] Cell Structure ] Mitochondria ] Cell Nucleus ] Chromosomes ] Mitosis ] Meiosis ] Proteins ] DNA ] DNA Replication ] Gene Expression ] Mutation ] Molecular Genealogy ] Collecting Your Own DNA ] Polymerase Chain Reation ] Primers ] DNA Sequencing ] How Microsatellite Repeats Are Counted ] YSTR Database Allele Frequency Charts ] Dorsey DNA Surname Project Home Page ] Links ]

This web is lovingly dedicated to the memory of
Mr. James Dorsey
who so graciously and enthusiastically
donated his DNA to solve our family mystery. 


Jim Dorsey
2/12/1930 — 4-30-2002

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