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If a brown eyed man marries a blue eyed woman and they have ten children all brown eyed can you be certain that the man is homozygous?
Wiki User
∙ 13y ago
No. You cannot prove/disprove homozygosity. You can prove heterozygosity if there was a blue-eyed child, but as long as the couple keeps having brown-eyed children, it cannot be shown whether the man is homozygous.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoBrown 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.
In this case, the chance is 1 in 4 of having a blue eyed child.
Wiki User
∙ 12y agohe is homozygous!
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Is eye color a homozygous recessive genetic disorder?
Blue eyes - homozygous recessive Brown eyes - homozygous dominant Brown eyes with one brown allele and one blue allele - heterozygous
A plant can have either brown B or red b leaves Brown is the dominant trait If a plant has genotype bb which best describes the plant?
heterzygous with brown leaves
What is homozygous dom?
Say "B" indicates the gene for brown eyes, and "b" the gene for blue eyes."BB" - Homozygous ( the person has brown eyes)"Bb" - Hetrozygous ( the person has brown eyes)"bb" - Homozygous ( the person has blue eyes)Dominant refers to the dominant gene, i.e. the one that decides the appearance of the person (The gene represented by a capital letter).Recessive refers to the recessive gene, i.e. the other gene which does not have any effect on the appearance of the person, but may have an effect on the appearance of their future children (The gene represented by a lower case letter).
How does heterozygous and homozygous differ?
Heterozygous is when you are a hybrid, and you have one recessive and one dominant allele. Like Aa for example. people who are homozygous are either homozygous dominant or homozygous recessive. Homozygous recessive is when you have two recessive alleles, like aa. Homozygous dominant you could either have Aa or AA. A capital letter represents the dominant allele, and a lower case letter represents the recessive allele. If one of your parents had brown eyes, and one had green, and the brown is dominant and the green is recessive, and you were heterozygous, you would have brown eyes. E (lets just say stands for eyes) would be dominant and e would be recessive. if you were heterozygous, you would have Ee. You'd have brown eyes because the dominant allele masks the recessive allele. and yes im only 13 years old im sorry if its too confusing i probably didnt word it right:)
How do you determine how many offspring will be the dominant color?
You can use a Punnet Square to figure it out. For example, if gray elephants dominate over brown elephants, and you cross 1 homozygous gray elephant (GG) and one homozygous brown elephant (gg), the Punnet square predicts that the offspring will all be heterozygous Gg. They will all be gray, however, because gray dominates over brown.
If you crossed a homozygous dominant man with brown eyes with a homozygous recessive woman with blue eyes what color or colors would their children have?
I don't know what your scientific terms mean, but I can tell you that I am a blue eyed female (my father was brown eyed/my mother had hazel eyes). The father of my two children is brown eyed. Both of my children have blue eyes.
Is eye color a homozygous recessive genetic disorder?
Blue eyes - homozygous recessive Brown eyes - homozygous dominant Brown eyes with one brown allele and one blue allele - heterozygous
A plant can have either brown B or red b leaves Brown is the dominant trait If a plant has genotype bb which best describes the plant?
heterzygous with brown leaves
If your mother had brown eyes and her father had blue eyes what would the baby have?
Brown color of eye is dominant over blue color. If the mother is homozygous for brown color of eye, than the all the children will have brown color eyes. If mother is heterozygous for brown eyes, than 50% of children will have brown eyes and 50% will have blue eyes.
Why do children have characteristics of both their mother and father?
Children have similar characteristic's to their parents because when they are conceived, both of the parents genes unify to create a new set of characteristic'd depending on dominant and recessive traits. For example, Jane and Henry find out they are having a baby. Jane has homozygous blue eyes whilst Henry has heterozygous brown eyes. The chances are that their baby will either have 50% homozygous blue eyes or 50% heterozygous brown eyes.
How do you prove if something is heterozygous?
The carrier must be Homozygous because if he were hetero it must be Hh and the dominant gene is expressed but homozygous gives them the possibility of hh (only a carrier) or HH (definitely a carrier) Don't totally understand the previous answer; however, I understand the question to mean that you want to know if you are homozygous or heterozygous for a certain trait. If you express a recessive phenotype, that is you have blue eyes for example, you are definitely homozygous for that trait. If one of your parents has a recessive trait, like blue eyes, and the other parent expresses a dominant trait, like brown eyes, AND if you have brown eyes, you can be sure that you are heterozygous. Otherwise it is impossible to tell until you have children. Then you can work backwards from you and your spouse, look at their parents and your parents and then figure the only possible way all those conditions could exist is if you are heterozygous or if you are homozygous for that trait.
When you cross a homozygous brown horse with a heterozygous brown horse which will be the dominant trait?
a brown horse i just did this in school a few weeks ago
What is homozygous dom?
Say "B" indicates the gene for brown eyes, and "b" the gene for blue eyes."BB" - Homozygous ( the person has brown eyes)"Bb" - Hetrozygous ( the person has brown eyes)"bb" - Homozygous ( the person has blue eyes)Dominant refers to the dominant gene, i.e. the one that decides the appearance of the person (The gene represented by a capital letter).Recessive refers to the recessive gene, i.e. the other gene which does not have any effect on the appearance of the person, but may have an effect on the appearance of their future children (The gene represented by a lower case letter).
A brown mouse is repeatedly mated with a white mouse all the offspring are brown if two of the offspring are mated what fraction of the F2 mice will be brown?
75% or 3/4. The two F1 (offspring) mice have a genotype Bb, and express the dominant (brown) trait. When they mate, 1/4 will be BB (homozygous dominant - brown), 2/4 will be Bb (heterozygous - brown), and 1/4 will be bb (homozygous recessive - white).
A homozygous dominant brown mouse is crossed with a heterozygous brown mouse (White is the recessive color)?
A pretty bow
If a black and white homozygous stallian is mated with a brown mare what would the colt look like?
a horse
What percentage will be brown if black rabbit homozygous mates with a brown rabbit?
my doe is black and my buck is brown. They have 3 brown offspring and 2 black. Actually one bunny is brown with black. So i can say that it is 50-50
