DNA Diagnostics Centre Eye Colour Inheritance Chart
The DNA Diagnostics Centre eye colour inheritance chart is based on a theory
that dates back to the 1800's. It is not a reliable predictor of paternity.
DNA Diagnostics Centre provides the eye colour inheritance chart as an educational service for our guests. Visitors seeking a more accurate determination of paternity for personal or legal purposes are encouraged to order either a
private DNA paternity test
legal DNA paternity test.
The eye colour inheritance chart is used to determine either:
- The possible eye colours of the child when the eye colours of
the mother and the father are known, or
- The possible eye colours of the father when the eye colours
of the mother and child are known
Eye colour is known to have a polygenic inheritance pattern,
possibly governed by 6 or more genes. There are also 6 different
described eye colours. Basically, dark is dominant at each of the
6 genes, and the more dominant alleles that you have the darker
your eyes are. The different eye colours and the number of dominant
alleles suggested in this theory are shown below.
DNA Diagnostics Centre Eye Colour Inheritance Chart:
0 dominant alleles
1 dominant allele
2 dominant alleles
3 dominant alleles
4 dominant alleles
5 dominant alleles
Dark brown / black
6 dominant alleles
Basically, based on this theory:
- 2 light blue eyed parents cannot have a blue eyed (or
darker eyed) child.
- 2 blue eyed parents can have a blue-green (or lighter)
eyed child, but not hazel or anything darker.
- 2 blue-green eyed parents can have a light brown (or
lighter) eyed child, but not brown or anything darker.
- 1 light brown eyed parent and 1 'blue-green' eyed parent
can have a child with any of the possible eye colours.
- 2 dark brown or black eyed parents can have a child with
any of the possible eye colours (but it is unlikely they will
have a light eyed child, such as light blue or blue).
eye colour usually
starts out much lighter at birth and becomes its true colour in
1 or 2 years after birth. Variations can also occur randomly.
Interestingly, this theory was generated in the late 1800s, which demonstrates
- how inheritance patterns were pretty well understood (by some) back then, and,
- that eye colour is, still today (even with the human genome sequenced), very difficult to predict due to its polygenic inheritance pattern.
eye colour is not a very reliable or accurate method of determining the paternity of a child.
in determining paternity, please order a
by clicking the button below. DNA Diagnostics Centre offers
paternity testing for peace of mind
as well as
legal paternity testing.