DNA for Genealogy
What is DNA?
Autosomal DNA
Mitochondrial DNA
Y-Chromosome DNA
DNA Test Process
DNA Test Results
DNA Mutations
Y-DNA Markers
More Y-DNA Markers
Y-DNA TMRCA
Y-Chromosome SNPs
Y-DNA Haplogroups
mtDNA Interpretation
mtDNA Haplogroups
Testing Companies
DNA Links
Y-DNA Markers Each "rung" on the DNA ladder is called a "nucleotide" Repeats of nucleotide patterns (e.g. CAGT) are called STRs The number of STRs at named DNA locations = marker values Males with similar marker values may have a common ancestor
