Two healthy parents have a child who is later diagnosed with cystic fibrosis. What is the genetic term for this kind of disease? Using Mendel’s pattern, pick a letter for this gene and give the genotypes of the parents and the child. What are the odds that their next child will also have cystic fibrosis?
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Two healthy parents have a child who is later diagnosed with cystic fibrosis.
-
What is the genetic term for this kind of disease?
-
Using Mendel’s pattern, pick a letter for this gene and give the genotypes of the parents
and the child.
-
What are the odds that their next child will also have cystic fibrosis?
-
Step by step
Solved in 2 steps
- Jan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have three children with the disease and then Jan becomes pregant with fratnernal twins, what is the probability that both twins will also have the disease?Jan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have five children, what the probability that three or more of the children will have the disease?Hemophilia is a sex-linked recessive trait. A male hemophiliac and phenotypically normal female have a son with hemophilia. They would like to have one more child. What is the probability of having a child without hemophilia? Explain using a Punnett square. Is it possible for a girl to be born with hemophilia? Explain.
- Porphyria is a genetic disorder caused by the inability to properly metabolize a component of hemoglobin. King George III is suspected to have been afflicted with this disorder. Assume that both George and his Queen suffered from this disorder and they had one afflicted child and one normal child. Is porphyria inherited in a dominant or recessive fashion? What must be the genotype of both George and his Queen? Using punnett square, show ALL work used to achieve your answer.Sickle cell anemia is a human genetic disorder caused by an autosomal recessive allele. A couple plan to marry and want to know the probability that they will have an affected child. With your knowledge of Mendelian inheritance, what can you tell them if (1) each has one affected parent and a parent with no family history of SCA or (2) the man is affected by the disorder but the woman has no family history of SCA?Cystic fibrosis is a disease that is passed down through the generations. The recessive alleles for cystic fibrosis are heterozygous carriers in both parents. What is the probability that one of their children may develop cystic fibrosis?
- Frank and Susan both have freckles but they're firstborn son Lawrence does not demonstrate the characteristics. What are the most likely genotype of Frank Susan and Lawrence?Johnny has unattached earlobes (a dominant trait) like his father, but his mother has attached earlobes. What is johnny’s genotype?A young couple went to see a genetic counselor because each had a sibling affected with cystic fibrosis. (Cystic fibrosis is a recessive disease and neither member of the couple nor any of their four parents is affected). What is the probability that the female of this couple is a carrier and what are the chances that their child will be affected with cystic fibrosis?
- A healthy young couple, Charlie and Eva, both with families histories of cystic fibrosis, visits a genetic counselor before deciding whether to have children. The genetic counselor analyzed their pedigree to determine if they are carriers of the alleles for cystic fibrosis. On a sheet of paper, draw the given pedigree chart below and label each individual with the correct genotype.Based on the observed inheritance pattern and ratio of phenotypes, what are the genotypes of the affected children? Select an answer and submit it. For keyboard navigation, use the up/down arrow keys to select an answer. a) If c- = Cystic Fibrosis, the children are c-/c-. b) If c- = Cystic Fibrosis, the children are C/C. c) If c- = Cystic Fibrosis, the children are C/c-. d) If c- = Cystic Fibrosis, the children are C.Mrs. Dela Cruz suffers cystic fibrosis and married a carrier for the disease. What is the percentage that their offspring will express the disease?