Yes! You get it!
Ok, here's one theory, very very old, but it's one of the few that account for more than just blue/green and brown. Keep in mind that this is just a theory and quite likely not the real answer.
So in this theory, every person has six genes for eye color, with of course two alleles per gene. Capital letters indicate dominant alleles, lowercase indicate recessive
So hypothetically, here are the gene sequences:
1. a person with very light blue eyes: aabbccddeeff
(no dominant alleles)
2. a person with hazel eyes: AABBCCddeeff or AAbbCCddEEff
(at least 3 dominant alleles, 3 recessive)
3. a person with very dark brown eyes: AABBCCDDEEFF or AaBbCcDdEeFf
(a dominant allele at every position, so at least six)
As you can guess, 2 dominant alleles and 4 recessive will have blue/green eyes. 4 dominant, 2 recessive - light brown eyes.
So robyn,
Let's pretend your mother has dark brown eyes
M - AaBbCcDdEeFf
She has six dominant alleles that are paired with recessive alleles
And we'll pretend your father's eyes are blue
F - aabbCCddff
He has 1 dominant allele, paired with another dominant, but all other alleles are recessive
I'll call you R. There are 4^6 (2^12) possible combinations as each allele (A-F) has a seperate punnett square. I don't want to list them all, I'll instead list all the combos in which you have your stated hazel eyes. The mark (2C) denotes when both C alleles are dominant
R01 - AaBbCcddeeff - ABC dominant
R02 - AaBbCCddeeff - ABC dominant (2C)
R03 - AabbCcDdeeff - ACD dominant
R04 - AabbCCDdeeff - ACD dominant (2C)
R05 - AabbCcddEeff - ACE dominant
R06 - AabbCCddEeff - ACE dominant (2C)
R07 - AabbCcddeeFf - ACF dominant
R08 - AabbCCddeeFf - ACF dominant (2C)
R09 - aaBbCcDdeeff - BCD dominant
R10 - aaBbCCDdeeff - BCD dominant (2C)
R11 - aaBbCcddEeff - BCE dominant
R12 - aaBbCCddEeff - BCE dominant (2C)
R13 - aaBbCcddeeFf - BCF dominant
R14 - aaBbCCddeeFf - BCF dominant (2C)
R15 - aabbCcDdEeef - CDE dominant
R16 - aabbCCDdEeef - CDE dominant (2C)
R17 - aabbCcDdeeFf - CDF Dominant
R18 - aabbCCDdeeFf - CDF Dominant (2C)
R19 - aabbCcddEeFf - CEF dominant
R20 - aabbCCddEeFf - CEF dominant (2C)
With the genes of M and F, the only gene that need ever be dominant is C. Which means that in two combinations, you could have had the same phenotype as F.
www.genetree.com/resource/eyeColorCalculator.php