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Why cant parents with brown hair (dominant) have a child with blond hair (recessive)?
They can. It's just not likely.
(3 out of 4 kids will have brown hair.
What else can I help you with?
If someone has a dominant trait such as brown hair and his or her mate has a recessive trait that is brown hair can the offspring have brown hair?
I think you've mis-asked this question, since you've used "brown hair" in both portions of the question. If you mean, if one person has brown hair and another has blond hair, will their children have blond or brown hair? The answer is it's highly likely that the children will have brown hair - brown hair is a dominant gene - but there is a possibility that the child will have blond hair, since the way the genes combine is not always the same. If it were always predictable, all children from the same parents would be the same, like clones of each other; and they're not.
What stands for dominant allele?
A dominant allele is a version of a gene that is expressed when present, masking the effects of a recessive allele when both are present in an individual. It is represented by a capital letter in genetics notation, such as "A" for a dominant allele and "a" for a recessive allele.
How come your dad has blue eyes blond hair mom has hazel brown eyes and one brother has blue eyes blond hair and the other has green eyes blond hair why do you have brown hair and dark brown eyes?
I don't know how much you know about genes, but there are dominant genes and recessive genes, and you only get two genes (a person could get two dominants or two recessives or one dominant and one recessive) To explain it better, here is a scenario:The father has a dominant blue eye gene + a recessive dark brown eye gene and two blond hair genes,While the mother has a dominant blond hair gene + a recessive brown hair gene and has a dominant hazel eye gene and a recessive green eye gene.Those two people have three kids: two have blond hair, one inherits his father's blue eye gene while the other inherits his mother's recessive green eye gene (leading to the first having blue eyes and the second having green eyes), and the last inherits his/her father's recessive dark brown gene and the mother's brown hair gene.If you look at old photographs you might find some grandparents have the same dark brown eyes or brown hair as you.
What colour eyes will my child have if one parent has blond hair and blue eyes and one parent has green eyes and blond hair?
There are dominant and recessive genes- according to popular theory, a brown/blond pair of alleles will have a dominant brown allele, but a recessive blond allele- dominant meaning: a person with a brown/blond allele or brown/brown allele will turn out brown, a person with blond/blond allele will turn out blond.Since both parents in this case are blond, they'd technically have a blond child as there is no dominant gene interfering. BUT if they were both brunettes, they could still have a blond child.Red hair is different- see "Genetics" at http://en.wikipedia.org/wiki/Hair_color Depending on the genetics of the mother and father themselves, the child will either have blue eyes if the green-eyed parent has a blue-eyed parent (probably, not 100% of course) and green eyes if the green-eyed parent has 100% green genes so to speak. See: http://www.athro.com/evo/inherit.htmlEye colour is not fully mapped out so it's more a game of probabilities.
What is a dominant genes?
A dominant gene or variant, refers to gene alleles ("variants") that "beat" other (recessive) genes. Meaning that if an individual has both a dominant and a recessive allele for a certain trait, the dominant allele will express itself "over" the recessive one, affecting the phenotype accordingly. A common example, while being a simplification of the actual complexities of the matter, is hair color. Brown hair is dominant over blond hair. A person with blond hair has both genes for that trait recessive, while a person with brown hair can have either both "brown hair color" genes or one "brown hair color" gene plus one "blond hair color" gene.
The parents of Tim have brown eyes but Tim has blue eyes so How is this possible?
Tim's parents both have the recessive trait for blue eyes but their brown eye traits are the dominant ones that show. Time must have by chance gotten both the recessive genes from his parents and no brown eye genes thus his blue eyes go without the brown taking over.
Is skin color dominant or recessive?
Well, black hair is the most dominant, but if you were comparing, say, blond hair to brown hair then the brown hair would be dominant. I am studying this for collage right now so I an pretty sure this is right, if it's not i am so doomed :0!!! lol! hope that helped, Aquilo
What is the likelihood of having a blue-eyed baby with blond hair if the mother and father both have blue eyes with brown hair that was blond from birth-6 years old?
blue eyes very likely, blond hair, not lucky- will turn out brown as brown hair is the dominant allele in a brown-blond pair of alleles (see genetics, hair color, wikipedia). Hi, no I don't agree because I have brown hair now but I was properly blond til I was 6 years old. Both my parents had brown hair. I am English (and by that I mean properly English - not muslim) and like 90% of ethnically English people, have blond hair when young that darkens with age. This is due to the English race being Germanic and related to the Germans, Danes, Norwegians etc. In the US, there are lots of people with either English or German ancestry - so much the same story there too. I do not know about English race, ancestors and genetic traits, nor the genetic background of the darkening blond hair, however if both parents have brown hair, it means that they carry at least one dominant gene that expresses brown hair. Still, if both parent have also one recessive allele for blond hair, theoretically there is a 25% chance that their children could be blond haired, and of course with blue eyes.
Dark hair parents light hair child how is this possible?
Everyone has at least two genes for hair color, but brown is dominant. If both parents have Brown-Blond genes, then they will have brown hair (because it is dominant over blond), but the child could get one blond gene from each parent and thus be Blond-Blond, and thus be blond.
Are brown eyes dominant or recessive?
Brown eyes are dominant. That's why more people have brown eyes then hazel or blue or green.
If a child has blond hair and both of her parents have brown hair what does that tell you about the allele for blond hair?
Both of the parents were heterozygous with the blonde hair allele, which is recessive. When there are two parents that are heterozygous, there is a 25% chance their offspring will get two of the recessive alleles. A punnett square can be useful when determining the different phenotypes and genotypes possible in offspring
Brown eyes are dominant Cross a homozygous brown with a recessive blue What color eyes will the offspring have?
all brown the chances of brown eyes both parents have to have blueeyes for blue eyes to become dominant but its still possible no matter what for blue or brown
