Homework Answers
Parents are normal and the disease is X linked recessive. But the boy is affected. It means the genotype of boy is XdY. Therefore the genotype of mother will be XdX and father will be XY.
The mother will be the carrier of the disease and the father will have normal genotype. Both the parents will be phenotypically normal.
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7. The disease Duchenne Muscular Dystrophy (DMD) is caused an X-linked recessive allele. Symptoms include muscle...
Duchenne muscular dystrophy (DMD) is a disease that results in progressive muscle weakness, ultimately leading to...
Duchenne muscular dystrophy (DMD) is a disease that results in progressive muscle weakness, ultimately leading to paralysis. DMD is a genetic disease that is inherited in an X-linked recessive fashion. Two parents have a large number of children, and find that some of their children have DMD. Specifically, they find that none of their daughters have DMD, but half of their sons have DMD. a. What is the genotype the two parents? Please be sure to specify which genotype corresponds...
Duchenne muscular dystrophy (DMD) is a recessive X-linked disorder, which results in symptoms before the age...
Duchenne muscular dystrophy (DMD) is a recessive X-linked disorder, which results in symptoms before the age of 6. A young girl, diagnosed with DMD has a 46 XX karyotype. The young girl’s brother is also living with DMD. Curiously, both parents are normal. Given the information in the question, why does this young girl have DMD? (1 sentence) How does this young girl have DMD? What mechanisms and how did this mechanism lead to this girl exhibiting DMD? (1 or...
Duchenne muscular dystrophy is an X-linked recessive condition affecting humans. It is a major form of...
Duchenne muscular dystrophy is an X-linked recessive condition affecting humans. It is a major form of muscular dystrophy. A female is a carrier (unaffected) and she has children with an unaffected man, and they have a boy. What is the percent probability that the boy will have the Duchenne muscular dystrophy disease? Enter your answer as a percentage value rounded to the nearest whole number. Do not enter a % sign. (i.e. enter 75, not 0.75 or 3/4)
A married couple discovers that there was a case of the X-linked recessive disorder Duchenne Muscular...
A married couple discovers that there was a case of the X-linked
recessive disorder Duchenne Muscular Dystrophy (DMD) in the
grandparental generation on both sides of their family. the
prdigree is as follows:
i) should the DMD case on the man's side affect the anxiety
level of the couple at all? Explain.
ii)What is the probanility that their first child will be a boy
with DMD?
8. A married couple discovers that there was a case of the X-linked recessive...
3. In humans, Duchenne muscular dystrophy (DMD) is a disease where muscles become weaker over time....
3. In humans, Duchenne muscular dystrophy (DMD) is a disease where muscles become weaker over time. The gene is located on the X chromosome and is recessive. Those afflicted with this disease usually die in childhood. If a female is a carrier for DMD, what percentage of her sons will inherit the disease? What percentage of her daughters will inherit the disease? 4. Eye color in fruit flies is sex linked, with the recessive allele causing white eyes. Show the...
John has the sex-linked recessive Duchenne muscular dystrophy, but his brother Jim is normal. Mary's family...
John has the sex-linked recessive Duchenne muscular dystrophy, but his brother Jim is normal. Mary's family has no history of DMD. What is the probability that Mary & Jim's children will have DMD? O 0% 100% for boys, 50% for girls 50% for boys, 100% for girls 50% for girls 50% for boys
A couple (both of which are normal) has a son that has Duchenne muscular dystrophy. This...
A couple (both of which are normal) has a son that has Duchenne muscular dystrophy. This is a rare sex-linked recessive disorder which causes muscle deterioration that almost always affects boys. The parents believe that the hospital mixed their child up with a normal child and sue the hospital. You have once again been called as an expert in genetics to testify. What do you tell the jury? Is it possible that these are the biological parents or did the...
W e pressing a recessive allele? Use the following information to answer Questions 4 and 5....
W e pressing a recessive allele? Use the following information to answer Questions 4 and 5. Duchenne muscular dystrophy is an X-linked recessive disease that causes degeneration and weakness in muscles. The normal condition is represented by the superscript D, and the allele that causes Duchenne muscular dystrophy is represented by the superscript d. 4. Draw a Punnett square to show a cross between a homozygous-dominant female and a male with Duchenne muscular dystrophy. 5. Which combination of parental genotypes...
1a. A boy has Duchenne muscular dystrophy, an X-linked recessive trait. His maternal uncle had died...
1a. A boy has Duchenne muscular dystrophy, an X-linked recessive trait. His maternal uncle had died of muscular dystrophy at the age of 21 years. What is the probability that this child's siblings will be affected? i. It depends whether his mother is a carrier or not ii. 50% iii. 25% iv. 75% v. 0% 1b. Neurofibromatosis type 1 is one of the most common autosomal dominant disorders. A woman with neurofibromatosis type 1 has an unaffected partner. Which of...
6. Hemochromatosis is an inherited disease caused by a recessive allele. If a woman and her...
6. Hemochromatosis is an inherited disease caused by a recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of each of the following? (a) All three children are of normal phenotype. (b) One or more of the three children have the disease. (c) All three children have the disease. (d) At least one child is phenotypically normal. (Note: It will help to remember that the probabilities of all possible outcomes...
A married couple discovers that there was a case of the X-linked
recessive disorder Duchenne Muscular Dystrophy (DMD) in the
grandparental generation on both sides of their family. the
prdigree is as follows:
i) should the DMD case on the man's side affect the anxiety
level of the couple at all? Explain.
ii)What is the probanility that their first child will be a boy
with DMD?
8. A married couple discovers that there was a case of the X-linked recessive...
3. In humans, Duchenne muscular dystrophy (DMD) is a disease where muscles become weaker over time. The gene is located on the X chromosome and is recessive. Those afflicted with this disease usually die in childhood. If a female is a carrier for DMD, what percentage of her sons will inherit the disease? What percentage of her daughters will inherit the disease? 4. Eye color in fruit flies is sex linked, with the recessive allele causing white eyes. Show the...
John has the sex-linked recessive Duchenne muscular dystrophy, but his brother Jim is normal. Mary's family has no history of DMD. What is the probability that Mary & Jim's children will have DMD? O 0% 100% for boys, 50% for girls 50% for boys, 100% for girls 50% for girls 50% for boys
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6. Hemochromatosis is an inherited disease caused by a recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of each of the following? (a) All three children are of normal phenotype. (b) One or more of the three children have the disease. (c) All three children have the disease. (d) At least one child is phenotypically normal. (Note: It will help to remember that the probabilities of all possible outcomes...
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