The blond allele is recessive, and gets covered up. If two brunette parents have a blond child, they had to have instructions for making blond hair hidden in their DNA.
So all in all the answer to your question is neither! Blonde hair, brown hair, blue eyes, brown eyes … none of those traits are dominant or recessive, as they are not due to a single gene.
A genetic mutation that codes for the blond hair of Northern Europeans has been identified. The single mutation was found in a long gene sequence called KIT ligand (KITLG) and is present in about one-third of Northern Europeans. People with these genes could have platinum blond, dirty blond or even dark brown hair.
We know that brown hair genes dominate over blonde, red and other hair colours. This means that blonde or red hair is only possible by having two matching recessive genes.
yes! The colour of hair is determined by more than one gene, so it is not as simple to detrmine inheritance.... I am not going to bore you with details but while two blond people are more likely to have blond children, it is not impossible to have a dark haired child.
Genes responsible for hair color come from both parents. Although the genes passed down from a child's parents determine hair color, variations can result in a child having a different hair color than both parents.
Since brown hair is a dominant trait, at least one of the parents would have to have brown hair. But since they're both blondes, the brunette gene can't exist, otherwise the parents would have shown brown hair. While brunettes can have blonde children, blondes cannot have brunette children.
Red is the rarest hair color, according to Dr. Kaplan, and that's because so few MC1R variants are associated with the shade. “Only three variants are associated with red hair,” she says. “If a person has two of these three variants, they almost certainly have red hair.
The rarest natural hair colour is red, which makes up only one to two percent of the global population. You commonly see these hair colours in western and northern areas of Europe, especially Scotland and Ireland. However, natural redheads may not exist for much longer.
no known link b/t eyebrow and hair colour.
How Rare Is Dirty Blonde Hair? About 2 percent of the population are natural blondes, but it's a very popular hair color because many turn to hair dye to achieve it. Brighter blonde shades like ashy blonde and beige blonde are more popular choices than dirty blonde, so you can consider dirty blonde a bit more unique.
Getty Images. Dirty blonde hair — also referred to as "dishwater blonde" — doesn't get as much attention as platinum, honey, or strawberry shades these days. But if you've been blessed with naturally dark blonde strands, consider yourself lucky.
Are Dirty Blondes rare? No, dirt blondes are not particularly rare, as this is one of the most common hair colors.
Eye colour, or more correctly iris colour, is often used as an example for teaching Mendelian genetics, with brown being dominant and blue being recessive.
If the genes relating to hair colour are both the same (they both point towards brown hair, for example) then your hair will most likely be brown. But, if they are different, then the dominant gene will take precedence. And, we know that brown hair genes dominate over blonde, redhead and other colours.
Human Dominant Traits
Dark hair is dominant over blonde or red hair. Curly hair is dominant over straight hair. Baldness is a dominant trait. Having a widow's peak (a V-shaped hairline) is dominant over having a straight hairline.
#BLONDE! The contest for the most attractive hair colour is obviously won by the blonde color with 35% of the overall vote, followed by the brunette. The bronze goes to Pippi Longstocking (people 30 and above will understand ? ). And the fourth place is for black hair colour.
Green is considered by some to be the actual rarest eye color in the world, though others would say it's been dethroned by red, violet, and grey eyes. Green eyes don't possess a lot of melanin, which creates a Rayleigh scattering effect: Light gets reflected and scattered by the eyes instead of absorbed by pigment.
The rarest skin color in the world is believed to be the white from albinism, a genetic mutation that causes a lack of melanin production in the human body. Albinism affects 1 in every 3,000 to 20,000 people. What is this? People with albinism usually have very pale or colorless skin, hair, and eyes.
'It's extremely rare for people to have hair that is naturally a strawberry blonde color. Basically, strawberry blonde is mostly based on red tones, with blonde highlights dotted here and there. It takes its name from the Italian renaissance.
Since you need two pieces of “red hair” DNA to have red hair, your child will only have red hair if they receive “red hair” DNA from both parents. Even if you don't have red hair, you can still pass on a red hair allele to your child!
Someone with strawberry blonde hair inherits two broken MC1R genes and only a few of the on form of the other hair color genes. Someone with darker red hair inherits the broken MC1R genes but more of the on genes.
“Can two parents with blue eyes have a child with brown eyes?” Yes, blue-eyed parents can definitely have a child with brown eyes.