Question

In: Biology

Hemophilia is a sex linked recessive condition. A woman who is a carrier for hemophilia marries...

Hemophilia is a sex linked recessive condition. A woman who is a carrier for hemophilia marries a man who is not a carrier.

a) What is the chance of their daughters having hemophilia?

b) What is the chance of their daughters being carriers for the hemophilia allele?

Expert Solution

Hemophilia is a sex-linked recessive condition. If only one gene of the pair is abnormal, the disease will not occur instead it will be carried to the next generation.

Let, - normal, - hemophilia

given, the female is a carrier () and the male is not a carrier which means he is normal ()

Cross: x

OFFSPRINGS: 1 normal daughter, 1 carrier daughter, 1 normal son, 1 affected son

total number of possibilities = 4

a) chance of having a hemophilic daughter = 0/4 = 0 = 0%

b) chances of having daughter who is a carrier = 1/4 = 25%

gladiator answered 2 years ago

Hemophilia is a sex-linked recessive disorder. If an unaffected woman mates with an unaffected man, and...

Hemophilia is a sex-linked recessive disorder. If an unaffected woman mates with an unaffected man, and they have 2 children with hemophilia, and 2 children who are unaffected, What are the chances that the couple will have a girl who does not have hemophilia?

Hemophilia is a sex-linked trait. A hemophilic man, whose father was normal, marries a woman whose...

Hemophilia is a sex-linked trait. A hemophilic man, whose father was normal, marries a woman whose father had hemophilia and whose mother was heterozygous for hemophilia. What are the chances that their son will have hemophilia? A daughter will have hemophilia? (Since there are two possibilities for the mother, you must use the data from two Punnett Squares to answer these questions.) Mr. X has been accused by Miss Z of fathering her child. The child's blood type is AB...

A woman is heterozygous for X-linked disease (Hemophilia A). If she marries a man without hemophilia,...

A woman is heterozygous for X-linked disease (Hemophilia A). If she marries a man without hemophilia, is there a chance that her daughters will suffer from the disease?(choose the best option) a.only daughters can suffer from the disease b.both daughters and sons can suffer from the disease c.none of the children will suffer from the disease d.only children can suffer from the disease

A woman who is a heterozygous carrier of an X-linked recessive disease gene mates with a...

A woman who is a heterozygous carrier of an X-linked recessive disease gene mates with a phenotypically normal male. They have six sons and four daughters. This disease gene has a penetrance of 80%. How many children will be affected by this disease?

2. Two normal parents have a son that is a carrier for hemophilia (an X-linked recessive...

2. Two normal parents have a son that is a carrier for hemophilia (an X-linked recessive disorder) and has Kleinfelter Syndrome. a. Write out the cross as described above illustrating the genotypes and phenotypes of the parents and child. b. Did the non-disjunction event occur in 1) mother, 2) father, or 3) could have occurred in either of the two parents? c. Did the nondisjunction event occur in 1) Meiosis I, 2) Meiosis II, or 3) could have occurred in...

A woman who is a carrier for the cystic fibrosis (cf) allele marries a man who...

A woman who is a carrier for the cystic fibrosis (cf) allele marries a man who is also a carrier. What percentage of the woman’s eggs will carry the cf allele?____________ What percentage of the man’s sperm will carry the cf allele?____________ The probability that they will have a child who carries 2 copies of the cf allele is equal to the percentage of eggs that carry the allele times the percentage of sperm that carry the allele. What is...

A normal man marries an affected woman with an X-linked recessive disease. The expected genotypes of...

A normal man marries an affected woman with an X-linked recessive disease. The expected genotypes of their offspring are_________.

a. Red green color blindness is a sex linked recessive trait. If a woman with normal...

a. Red green color blindness is a sex linked recessive trait. If a woman with normal vision whose father is colorblind marries a man with colorblindness. What would be the probability that they have a colorblind child? b. Two parents have ABO blood group genotypes. Which of the following blood types could not belong to one of their children? AB, B, O, A. c. A women who is a carrier for colorblindness marries a normal male. What is the probability...

1. A woman is affected with Alpha-1 antitrypsin deficiency, an autosomal recessive condition with a carrier...

1. A woman is affected with Alpha-1 antitrypsin deficiency, an autosomal recessive condition with a carrier frequency of 1 in 13. As they are planning on having children, her partner undergoes carrier testing for the condition. The result was negative, indicating that he was not found to be a carrier. The reported sensitivity of the carrier testing is 95%. What is the chance that their first child will be affected with Alpha-1 antitrypsin deficiency?

9. A woman is a carrier for Hemophilia A. A man is healthy. What will be...

9. A woman is a carrier for Hemophilia A. A man is healthy. What will be the probable phenotypes of their children and the probability of each phenotype occurring? Pick one. a. 100% of the children will probably be healthy. b. 100% of the children will probably have the disease. c. 50% of the children will probably be healthy, and 50% will have the disease . d. 75% of the children will probably be healthy, and 25% will have the...