What is the probability of a heterozygous brown eyed man and a blue-eyed woman having a blue-eyed child?

If both of you have brown eyes, then there is generally a 25\% chance that the baby will have blue eyes if both of you carry the recessive blue-eye gene. But if only one of you has a recessive blue-eye gene, and the other has two brown, dominant genes, then there is a less than 1\% chance of the baby having blue eyes.

What if two heterozygous people have kids what is the expected ratio of brown eyes to blue-eyed kids?

1. If B is the allele for brown eyes and b is blue, the genotype of the blue-eyed man is bb. If he were heterozygous, we’d expect to see a 1:1 ratio of brown- and blue-eyed children (because his wife is homozygous recessive, bb).

What is the probability that a child of this man and woman will have brown eyes?

Each child has a 25\% chance of having brown eyes and a 75\% chance of having blue eyes. This is simplified since the other eye color genes (like those that influence green eyes) are being ignored. But it does mean that brown (or green or hazel or…)

What is the probability of them having a blue-eyed child?

Predicting Eye Color

Probability of Eye Color
Parent 1	Parent 2	Brown
Blue	Blue	0\%
Blue	Green	0\%
Blue	Brown	50\%

What is the probability that two heterozygous parents will produce a blue-eyed child quizlet?

Product rule: (0.25)(1.0) = 0.25 or 25\%. There is a 50\% chance that the second twin will have brown eyes but carry the blue-eyed allele (heterozygous). The probability that this heterozygous individual will pass the blue-eyed allele on to his/her offspring is 50\%. Product rule: (0.5)(0.5) = 0.25 or 25\%.

What is the genotype of a female who is heterozygous for eye color?

BB
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb.

What is heterozygous example?

If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair. The relationship between the two alleles affects which traits are expressed.

What are the chances of having blue eyes?

Predicting Eye Color

Probability of Eye Color
Blue	Blue	99\%
Blue	Green	50\%
Blue	Brown	50\%
Green	Green	25\%

What is the genotype of the heterozygote?

Listen to pronunciation. (HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).

Are Punnett squares eyes heterozygous or homozygous?

All of the offspring will have brown eyes, but they will be heterozygous individuals. Punnett Squares Eye Color – Father has Brown eyes and is heterozygous (Bb). – Mother has Brown eyes and is heterozygous (Bb). Punnett Squares

What are the chances of a blue eyed child having brown eyes?

As you can see there is a 50\% chance that the homozygous recessive trait of blue eyes will be shown on their next kid, a 50\% chance that the heterozygous dominant trait of brown eyes is given on the next offspring, and a 0\% chance of a homozygous dominant trait given to the offspring.

What is the genotype ratio for a blue eyed child?

Genotype Ratio – 0 BB to 2 Bb to 2 bb (reduce) – 0 BB to 1 Bb to 1 bb Phenotype Ratio – 2 Brown eyes to 2 blue eyes (reduce) – 1 Brown eye to 1 blue eye What is the chance of this couple having a child with blue eyes?

What is the ratio of 2 brown eyes to 2 blue eyes?

Phenotype Ratio – 2 Brown eyes to 2 blue eyes (reduce) – 1 Brown eye to 1 blue eye What is the chance of this couple having a child with blue eyes? – ½ or 50\%