0
$\begingroup$

According to the internet, there is a 7% chance that two brown-eyed parents will have a green-eyed child. However, Dominance says that it is impossible for this to happen. Is the internet correct? If so, how is that 7% chance calculated? source: https://www.mamanatural.com/eye-color-chart/

$\endgroup$
2
  • 4
    $\begingroup$ The "internet" is not a source. According to who on the internet? $\endgroup$
    – Bryan Krause
    Commented Jun 2, 2021 at 3:54
  • 2
    $\begingroup$ "The internet" and "Dominance" are pretty vague sources. It'll help to specify the species and gene(s) involved. $\endgroup$
    – Armand
    Commented Jun 2, 2021 at 5:28

1 Answer 1

2
$\begingroup$

Sadly the site you referenced is not scientific. There is no scientific basis for a claim that "there is a 7% chance that two brown-eyed parents will have a green-eyed child". It is correct that multiple genes determine eye color, and the effects of some depend on the versions (alleles) of the other genes present, so predicting eye color is not as straightforward as it might seem.

$\endgroup$
2
  • 1
    $\begingroup$ Not to mention that it will depend on the specific family tree you are looking at and how many ancestors with different eye colors you can find in that tree. I'm sure there will be combinations that result in a 7% chance. But there will also be various others. $\endgroup$
    – terdon
    Commented Jun 2, 2021 at 14:48
  • $\begingroup$ mamanatural.com/eye-color-chart this is the source $\endgroup$
    – EmmaGao8
    Commented Jun 2, 2021 at 23:24

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .