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Home > Relationship Tests > Grandparent To Grandchild DNA testing
GRANDPARENT TO GRANDCHILD DNA TESTING

GRANDPARENT TO GRANDCHILD DNA TESTING

There are 3 major testing options for Grandparent to Grandchild testing:

 

DNA testing for grandparents and grandchildren

  • To establish whether or not particular grandparents and grandchildren are biologically related
  • GRANDPARENT TO GRANDCHILD DNA TESTINGGrandfather to grandson – Y Chromosome Test
    Men have one Y chromosome, which is passed down to their son and then to their grandson. So testing the Y chromosome will show us If the grandfather and grandson are biologically related.
  • Grandmother to granddaughter – X Chromosome Test
    The flow of X chromosome from mother to son to granddaughter means an X chromosome test is more applicable
  • Other possibilities
    We can also test other regions of DNA other than X and Y in specific circumstances where the flow of either X or Y DNA is not applicable. A table with the grandparent to grandchild relationships is listed with the cost of each test.

Summary of Grandparent To Grandchild DNA testing SIBLING DNA TESTING - Brother to Brother DNA Test

Testing for paternity of a grandchild with a grandparent
Cost
Must also have
Better with
Order
Grandfather to Grandson
(Y chromsome test)*
£199
-
-
Grandfather to Granddaughter
£299
Grandmother or Mother's DNA
both Grandmother and Mother's DNA
Grandmother to Grandson
£299
Grandfather or Mother's DNA
both Grandfather and Mother's DNA
Grandmother to Granddaughter (X chromosome test)*
£199
-
Mother's DNA

 

*About Y chromosome DNA testing

To establish whether or not a grandfather and grandson are biologically related, Y-chromosome testing is your least expensive option, nevertheless obtaining a very high accuracy (99.9%+).

Every man has one Y chromosome (women have no Y chromosome). A father passes his Y chromosome to all his sons. Therefore a grandfather and grandson, if biologically related, will have the same Y chromosome DNA patterns.

*About X chromosome tests

To establish whether or not a grandmother and granddaughter are biologically related, X-chromosome testing is your least expensive option, nevertheless obtaining very high accuracy (99.9%+).

A grandmother will pass one of her X chromosomes to her son who will, in turn, pass that X chromosome on to his daughter. Therefore a grandmother and granddaughter, if biologically related, will have exactly the same X chromosome patterns.

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