why would his kids have the opposite colouring?And yes, they are his.
2006-10-03 12:37:54 · 10 answers · asked by willow 1 in Science & Mathematics ➔ Biology
I never heard of dominant gene in the case of dark hair.I have studied genetics for many years.I would say both parents affects the composition of the genes found in the genome of their kids.You know about chromosomes and how they separate during the meiosis to go to daughter cell. So it is possible that a guy with dark hair has kids with light hair.This is amazing about Genetics!
2006-10-03 12:44:14 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Absolutely. It is not as simple as these other people are putting it. It is multifactorial and dependant on more than one gene. The concept is similar to skin colour. It is based on a spectrum from light to dark and usually (dominantly if you will) there is an additive effect. However, if there are lighter haired/eyed ancestors on either side there is a definite possibility that the offspring could have light hair and eyes. It is not soley based on the mother and father's colouring.
2006-10-03 12:59:08 · answer #2 · answered by natasha b 2 · 0⤊ 0⤋
someplace down the line her mom had to have a white ancestor. It remained dormant in her mom because of the fact maximum folk of darkish haired/eyes in her kin. it rather is uncommon yet in specific circumstances the recessive genes can come out yet the two mothers and fathers might would desire to have it. in simple terms like there have been circumstances in africa the place a baby would be born with blue eyes. the two mothers and fathers have the traits to make blue eyes they do exactly not exhibit it themselves.
2016-10-15 11:56:14 · answer #3 · answered by johannah 4 · 0⤊ 0⤋
Say D is the the dominant trait for dark hair.
So the guy has Dd (which would still give dark hair) and his mate has Dd or dd (light hair).
-----D ---------d
D: DD-------Dd
d: Dd---------dd
-----d ----------d
D: Dd---------Dd
d: dd----------dd
The first punnett square has a 25% of having a child with light hair, and the 2nd has a 50% chance of having a child with light hair.
The same goes for the eyes... Of course, this is a simplified version, but the idea is the same.
2006-10-03 12:53:52 · answer #4 · answered by Haley D 1 · 0⤊ 0⤋
he could be carrying a recessive gene and the moom of his child could hav egiven a recessive gene too which would make opposite coloring
2006-10-03 12:50:24 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Due to recessive genes the kids could have light coloring, i.e: If one of his parent's has light eyes and one of your parent's have light eyes your kids could have light eyes.
2006-10-03 12:46:42 · answer #6 · answered by Christina K. 2 · 0⤊ 0⤋
If he and his wife passed down genes for lighter hair and eye color...sure...these genes would have come from their grandparents.
2006-10-03 12:46:08 · answer #7 · answered by mahree 3 · 0⤊ 0⤋
Recessive genes.... perhaps he carries a blue eyed recessive trait.... and either the mother has blue eyes, or she also carries the recessive traits.
2006-10-03 12:46:22 · answer #8 · answered by voyagernj 2 · 0⤊ 0⤋
dark hair and dark eyes
2006-10-03 12:41:06 · answer #9 · answered by Webballs 6 · 0⤊ 0⤋
It's possible... my aunt and uncle both have black hair, their two daughters are white and have brown hair.
2006-10-03 12:47:48 · answer #10 · answered by Kainoa 5 · 0⤊ 0⤋