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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.
What else can I help you with?
What color are carries eyes?
hazel or brown.
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 inherited both the genes for brown hair and brown eyes from both parents, as brown is likely a dominant trait in this case. The child also carries the genes for blue eyes from the father and red hair from the mother, but the dominant brown traits are expressed in the child's appearance.
What color eyes will the child have father has grey eyes mother has blue eyes?
well it depends on if the mother has one trait for blue eyes or not. if the mother does then there is a 1/4 chance that the child will have blue eyes and a 3/4 chance that the child will have brown eyes but if the mother does not have a blue eyed gene and she carries 2 genes for brown eyes then your child is going to have brown eyes. but no matter wat color your child's eyes are he/she will carry one gene for blue eyes and will have a possibility to pass down blue eyes to his/her child
Are blue eyes more dominant than brown eyes?
No, brown eyes are more dominant than blue eyes genetically. Brown eye color is a dominant trait, while blue eye color is a recessive trait. This means that if a person has one gene for blue eyes and one gene for brown eyes, the brown eye gene will be expressed.
What if your friend has blue eyes her genes contain one allele for blue eyes and one allele for brown eyes which allele is recessive how do you know?
The brown allele is recessive. Think: Blue = B, and brown = b Your friend is Bb, or heterozygous for the gene. In heterozygotes, the expressed phenotype is the dominant gene, which in this case, apparently, is blue. Thus, because your friend does not have brown eyes, the brown allele must be recessive.
What color are carries eyes?
hazel or brown.
What color hair was susan b Anthony?
brown
If mother has brown eyes and father has blue eyes what will daughter have although father has three other children all with blue eyes?
Since is not known what the mother's genotype is (BB or Bb) or whether she carries the gene for blue eyes it is not possible to know.
What do blue eyes lack?
Brown.... blue eyes lack brown....
What color hair did susan b Anthony have?
blue eyes
Is brown eyes dominate or is blue?
Brown eyes are dominant.
Which are hotter brown eyes or blue eyes?
Definitely brown eyes on a guy and blue eyes on a girl. But its your opinion.
What has the author Susan Taylor Brown written?
Susan Taylor Brown has written: 'Can I Pray With My Eyes Open?'
If you have black hair and brown eyes and you carry a red and black hair gene and your partner has blue eyes and brown hair and carries the red and brown trait with them what will the child look like?
It's possible that the child will have black, brown or red hair.
What color are Terry Fox's eyes?
his eyes are blue
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 inherited both the genes for brown hair and brown eyes from both parents, as brown is likely a dominant trait in this case. The child also carries the genes for blue eyes from the father and red hair from the mother, but the dominant brown traits are expressed in the child's appearance.
What color are Robin Thicke's eyes?
Tyga has light brown eyes
