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  • ABO Blood Types can be used to calculate paternity?
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  • Eye colour can be used to determine paternity?
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  • Consent is require to test a person's DNA sample?
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  • DNA can be used to help solve crimes?
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DDC Eye Colour Chart

The DNA Diagnostics Centre (DDC) eye colour inheritance chart is structured on a theory that was determined back in the 1800's. Important to note - it is not a dependable interpreter of paternity.

DNA Diagnostics Centre presents the eye colour inheritance chart as an insight for our clients. Individuals seeking an accredited, accurate and affordable DNA test fir peace of mind or for legal purposes are advised to order with private DNA paternity test or a legal DNA paternity test.

The eye colour inheritance chart is used as a guide to either:

  1. Possible eye colours of the child when the eye colours of the parents are known, or
  2. The possible eye colours of the father when the eye colours of the mother and child are known

Eye colour is acknowledged to have a polygenic inheritance pattern, potentially governed by 6 or more genes. There are also 6 different stated 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 various eye colours and the number of dominant alleles stipulated in this theory are detailed below.

DNA Diagnostics Centre Eye Colour Inheritance Chart:

Light blue 0 dominant alleles
Blue 1 dominant allele
Blue-green 2 dominant alleles
Hazel 3 dominant alleles
Light brown 4 dominant alleles
Brown 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).

Lastly 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.

This theory was stated in the late 1800s, which reveals

  • how inheritance patterns were quite well understood during this period, and,
  • that eye colour is, still today (even with the human genome sequenced), extremely complex to calculate due to its polygenic inheritance pattern.

In conclusion, eye colour is not a very reliable or accurate method of determining the paternity of a child.

For your own peace of mind, DDC guarantee to test each and every DNA sample twice to guarantee DNA testing results. Order your DNA test today by selecting the test you require by clicking the options below.

DNA Diagnostics Centre (DDC) offers paternity testing for peace of mind as well as legal paternity testing.

 

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