Shouldn't a dark-skinned person's genes dominate those of a fair person?

Question

I remember doing the gene pool stuff when I was in highschool and they said blue eyes are recessive and brown is dominant. My mum has green eyes brown hair, my dad has blue eyes blonde hair, I have green/blue eyes and blonde hair, so that makes sense. My fiance is dark skinned and has dark brown eyes and black hair and his parents are the same. When I had our daughter I didn't expect for her to look very much like me but she got my green/blue eyes and ended up with light brown hair and olive skin. I am confused because I thought darker genes were dominant and that she wouldn't be able to get any of my fairness. Please explain, as you can see I only have the most basic knowledge of this subject lol

Answer 1

not always. i have a son thats half black and half white but his skin color is whiter than mine.

Answer 2

I don't think dark skin is dominant. Nor do I think a single gene determines skin color.

As far as I'm aware, multiple genes determine skin color, and they are mostly (or perhaps all) co-dominant, meaning having both genes produces a mixture of the two phenotypes.

Eyes are a bit simpler, but still, the genes for eye color are several, not one. As my middle-school science teacher told us during our genetics lessons, "It's more complicated than that. If your eye color doesn't match your parents', don't look at your mother and wonder what color eyes the mailman or pool boy has."

xD I loved that teacher.

-IMP ;) :)  

Answer 3

There are three known genes that factor into eye coloration.

Eye color genes are called:

EYCL1, green/blue eye color. Chromosome 19

EYCL2 that colors the iris center darker. Chromosome 15

EYCL3 brown/blue Chromosome 15

Dominance order:

EYCL3 brown >EYCL1 green >EYCL3 blue = EYCL1 blue

This interactive site lets you plug in the parents eye colors 1 & 3 and shows you the chances of the resulting children getting any specific set of genes.

http://www.athro.com/evo/gen/genefr2.htm...

The other reason for different colours is in the organization of pigment in the iris and this is controlled at least in part by eye color 2. This gene is also called 'central brown. However the iris can be light near the pupil and dark at the outer edge or even have different colors on the inner and outer edges so more factors are involved as yet unknown.

http://www.thetech.org/genetics/news.php...

http://en.wikipedia.org/wiki/Eye_color

http://www.thetech.org/genetics/ask.php?...

Two different colors in eyes is heterochromia

http://en.wikipedia.org/wiki/Heterochrom...

brown/blond hair  or skin color comes from different genes and controls

http://pages.globetrotter.net/peter_fros...

http://biology.plosjournals.org/perlserv...

http://www.as.ua.edu/ant/bindon/ant570/t...

Answer 4

Each spot on DNA is basically a c**p shoot.  When this spot is open god rolls the dice and that genetic material falls into the slot.  The next slot is filled by another dice roll.The dominance and recessiveness is only in play if there is one of each.  Your fiance may have a blue eyed relative his family doesn't want to talk about.Your baby is 50% you and 50% him but the chance card is played by...chance.  Baby get what baby gets.  If you have a second child you may have one that doesn't look like your daughter at all.   

Answer 5

well not all things can be explained your daughter just came out that way she 's cute

Answer 6

She's a mutation which is rather exciting. Eye color and hair color are generally on the same chromosome, therefore both your fiance's and your's chromosomes split and rejoined with one another---- causing the mix your daughter ended up with. There is a good chance your daughter's eyes will end up being more of a green or hazel when she gets older as you do need two blue eye genes to make blue eyes, which from your fiance's description is pretty unlikely. Green eyes themselves are a mutation (mix of blue and brown).

Answer 7

In terms of skin color, your daughter has both your skin genes and his skin color genes and she should be some color in between.  In terms of eye color, brown is dominant, you're right.. so that means that one of your fiance's parents gave him a brown eye gene and the other parent gave him a blue eye gene.  And the brown eyes come out with him because it's dominant, but the blue eye gene is still in him.  There was a 50/50 chance that he would give his blue eye gene, he could have just as easily given his brown eyes to your daughter.  But either way, your daughter was always going to get the recessive from you.  She was either going to be blue/blue with blue eyes or blue/brown with brown eyes.

Lol I hope that makes sense.

Answer 8

she probely got your genes doesnt always work that way

Answer 9

"Dark" genes are not always dominant.  My husband is hispanic, I'm half hispanic 1/2 white, and although we're not dark skinned, our first son is very very fair with bright red hair (we both have very dark brown hair)  our (2nd born) has the same coloring as we both do.  Go figure!!  I've been asked before if he's adopted, and I'm often asked if they're both mine..lol.

Genetics are a crazy thing.....:)-