Did your grandmother do the test as well, Blam? Are you a youngster?
No. In fact I never knew either of my dad's parents. I got the results from his sister's daughter...my cousin.
mtDNA is passed along only through the females.
I have my mother's mtDNA which is haplogroup 'V'. My sisters have passed this on to their daughters.
My son has my yDNA (R1b) and his mother's mtDNA (haplogroup 'H'). Haplogroups R1b & 'H' are the most common amoungst Europeans at about 68% each.