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Man with blue eyes mates a woman heterzygous for brown eyes What is the probability of them having a blue eyed child?
Wiki User
∙ 13y ago
Brown eye gene = B
Blue eye gene = b
Each person has two copies of the eye color gene in their genome, one inherited from each parent. Now if both parents only carry the gene for brown eyes, BB and BB, then their child will receive one B from each parent, ending up as BB. The same works for blue eyes, if that's the only gene both parents carry, bb and bb. Each parents gives on b to the child, who ends up as bb.
If you have one parent who only has the gene for brown eyes, BB, and one parent who only has the gene for blue eyes, bb, then all the children will have brown eyes. Example: One parent gives a B, the other gives a b. Bb = brown eyes. Here's why: When you have two alleles (coding sequences) from genes that are at odds with each other, one version will override the the other. When dealing with eye color, B always dominates b. But these children now carry the b gene in them, and could pass it down to their own children. Some of them, depending on the other parent, could end up with blue eyes.
If one parent is Bb, and the other is bb, then each time they have a child, there is a 50% chance it will have blue eyes. Example: First parent is Bb, second parent is bb, then their children will end up as either Bb, bb, Bb, bb. If both parents carry the genes for brown eyes and blue eyes, then each time they have a child, there is a 25% chance it will have blue eyes. Example: First parent is Bb, second parent is Bb, then their children will end up as either BB, Bb, Bb, bb.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agorare but it happened to me
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A child has brown hair and brown eyes His father has brown hair and blue eyes His mother has red hair and brown eyes The best explanation for the child having brown hair and brown eyes is that?
the child received genetic information from each parent.
Which of the following calculations require that you utilize the addition rule?
Calculate the probability of a child having either sickle-cell anemia or cystic fibrosis if parents are each heterozygous for both.
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 is dominante allele mean?
a dominant allele is basically the one stronger, more powerful. unlike the recessive allele, i.e if two people wanted to calculate the probability of them having a baby with brown eyes, theyd have to look at their alleles, if the father had brown eyes, XX (to show how brown eyes are stronger) and the mother had hazel eyes (xx) their chid is going to have (Xx) which in this case, the child will have brown eys, because X is more dominant(strong) than x (recessive)
Can a white man with green eyes and a dominican with black eyes can have a baby with green eyes?
Whichever gene is more dominant will pass on to the child. EDIT: Whoever posted the above answer is incorrect. SHORT ANSWER: Brown eyes are more likely, but it's still possible. Indepth: Brown eyes will always be the dominant gene over green. Gene dominance doesn't work on a personal level. It just depends which combination of genes the parents pass. This is why you see siblings with different eye colors. The dad could have brown eyes and still be carrying a recessive gene for green eyes. If he passes those genes instead, then green eyes are much more likely. Likewise, the child could end up with brown eyes while carrying the mother's recessive gene for green eyes, and then pass it to their child. ("skipping a generation")
What is the probability of having a male child?
Nowadays it is approximately 0.5169
What is the probability that a child will have a round face brown or blond hair?
Depends on the parents.
What is the probability of having a normal child?
The probability is zero! There is no such thing as "normal". Every child (and adult) has some unique characteristics and that makes them not normal - in that respect.
How is probability used in biology?
It's used commonly to estimate the traits of a child of two parents. For example, the probability of the child having blue eyes, or curly hair, or even having genetic disease.
What is the probability if a girl is expecting her 10Th child if rest 9 are girls?
Since having a child to a child is an independent event (assuming no outside intervention), the probability is still about 50 / 50 boy or girl.
What is the probability of a couple having a male child after already having 2 female children?
It is always 50/50.
What is the Probability of having 0 or 3 boys in a 3 child family?
1/4
Can a baby have brown eyes if the mother has brown eyes but the recessive gene for blue eyes and the father has blue eyes?
Eye color is actually not controlled by straight Mendellian genetics. However, based on your question, the probability of a brown eyed child would be 50% and the probability of a blue eyed child would be 50%.
Luna is expecting her child What is probability of having a girl after 10 female children?
1/2
What is the probability of having 2 girls and 3 boys in a five child family?
1/32
How is chris brown having a baby with a STD?
he isn't having a child nor does he have a std
A child has brown hair and brown eyes His father has brown hair and blue eyes His mother has red hair and brown eyes The best explanation for the child having brown hair and brown eyes is that?
the child received genetic information from each parent.
