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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?
Wiki User
∙ 12y ago
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
Wiki User
∙ 12y ago
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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.
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.
Can parents with red and brown hair have a blond hair child?
Yes.
What is the probability that a child will have a round face brown or blond hair?
Depends on the parents.
If a child has blonde hair and both the parents have brown hair what does that tell you about the allele for blonde hair?
It tells you that even though the parents have brown hair, they have a recessive allele for blonde hair also. And even though brown is suppose to be visually dominant, it is not the case at all. Two brown heads can make a blonde or brown, and of course even red haired child. Another way to look at it may be the parents have the following alleles for hair color: (b,b) - (b,b) in which case the dominant allele is Blonde or Brown.
Does 2 brown haired parents make a brunette child?
Not necessarily. If both parents have the recessive gene for red hair, the child may have red hair. Brunet parents could also have a blond child.
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.
Your hair as a child blonde now mousy with dark blue eyes husband as child red hair now sandy brown with blue eyes what colour hair will baby have?
The child could have almost any hair color. It all depends on the past history of the family. Hair color is determined by 2 polygenes. One that is Blonde or Brown. The other is Red or not red. The father has a brown allele present, which is dominant to blond. Blond and red are both recessive hair colors, so the likelihood of the child having either is lower to begin with. Because of the father's brown allele there's a 50% chance of the child having darker hair, and depending on the allele that the mother possesses, there's either a 50% or a 0% chance of the child having red hair. So there could be a 50% chance of the child being blond, a 50% chance of the child being dark haired, and depending on the mother's allele a 50% chance of being a darker red haired individual. Hopefully you can make sense of that.
What if a gene skips a child can that gene be given to there kid?
A person can only pass on genes that he/she has inherited from his/her parents. You may be talking about a situation in which a recessive gene is not expressed in a child because it inherited a dominant allele as well, and is heterozygous for that trait. If that child then has his/her own child, the recessive trait could be expressed in the children of that child, if the other parent also carries the recessive allele.Example: One parent has brown eyes, the other has blue eyes. Their child inherited a brown eye allele and a blue eye allele, and has brown eyes, but is heterozygous. This child then has a child with another brown-eyed person, and their offspring has blue eyes, even though both parents have brown eyes. It just so happens that both of these parents are heterozygous for brown eyes, so they both carry the recessive blue-eyed allele which they each passed on to their blue-eyed offspring. So, this makes it look like the blue-eyed allele skipped a generation, but in reality it was always there, but not always expressed.
If red is the dominant hair color but the father has brown hair and the mother has red hair and the hair color of the father is dominant then what color will the hair of their child be?
It's very hard to answer this question as there are no details on what alleles the fathers or mothers DNA contains. The father has to have an allele for red hair for the child to have a chance of having it. Presuming that the father has a brown and red hair allele and the mother has the same it works out like this. Brown + Brown = Brown Brown + Red = Brown (Because it's dominant) Brown + Red (from other parents) = Brown (Because brown is dominant) Red + Red = Red The chances of brown therefore is 3:1 as you cannot be sure on what the child will receive. MORE like 5-1 his here will be blond
Can a Brown haired parent have a redheaded child?
YES!!!! Both of my parents have dark brown hair. My oldest sister has blond hair and my other sister and I have copper red hair!!!
If both parents O positive can child be A positive?
If both parents are O+ve, it means they have i allele, which is a recessive allele. For a person to have A+ve blood group, IA allele should be present. But in case of both parents being O+ve, there is no possibility that either of the parents carry the IA allele since it is a dominant allele. Thus the child would have to be O+ve.
