Draw a pedigree chart for the following scenarios and answer the questions: 1. A woman's sister has cystic fibrosis, a disease caused by recessive genes. Neither of her parents has the disease. What chance is there that her mother is a carrier (heterozygous) for the trait? What chance is there that the woman herself is a carrier for the trait?
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- A. Color-blindness is a recessive, sex-linked disorder in humans. A color- blind man has a child with a woman who is a carrier of the disorder. KEY: X= normal vision XC = color-blindness 2. Illustrate using a Punnett square the probability of having children who will have normal vision and children who will be color-blind. Guide Questions: a. What is the genotype of the male?. b. What is the genotype of the female? c. What is the chance that the child will be color-blind? d. What is the chance that a daughter will be color-blind? e. What is the chance that a son will be color-blind?While studying of the family tree with history of hypertrichosis (hyper hirsutism of the ear) this sign was founded only in the men and it was inherited from father to the son. Define the type of hypertrichosis inheritance? Select one: a. Y-linked b. Autosomal-recessive O c. Autosomal-dominant d. Recessive, X-linked e. Dominant, X-linkedHuntington's Chorea is an autosomal dominant trait. Below is a pedigree of a family with Huntington's disease. If III-6 had a child with a healthy individual, what would be the chance they would have a child with Huntington's? Group of answer choices a 100% b 25% c 50% d 0%
- Match the following terms with their correct definition. A type of inheritance in which there is an earlier age of onset and a more severe phenotype in each successive generation. An effect in which the genotype of the mother determines the phenotype of the offspring. 1. Genetic anticipation 2. Position effect A type of inheritance were multiple genes contribute to the same phenotype. 3. Maternal effect 4. Pleiotropy A type of inheritance where one gene affects many different phenotypes. 5. Multigene (polygenic) inheritange An effect on gene expression from its location in an area of heterochromatin or euchromatin packaging.The inheritance of Huntington Disease can be explained by the concept of haplosufficiency. Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b True. True but only is both parents were homozygous dominant for the disorder. False. d It is impossible to tell with the information that has been provided.Sickle cell anemia is inherited as an autosomal recessive condition. It also exhibits incomplete dominance in that the heterozygous genotype displays a mild form of the disease known as sickle cell trait while individuals with the homozygous recessive genotype have a severe form of SCA. A man who has severe sickle cell anemia marries a woman who suffers from a mild trait. What is the probabilitu they will have a child with severe SCA?What is the probability they will have a child with mild SCA? What is the probability they will have a normal child? Show ALL work using punnett squares.
- SUBJECT: GENETICS Topic: Probability 1. Consider albinism a trait to occur in a human family. If two parents areheterozygous for such trait, the probability of having a normally pigmented child is 3//4 and having an albino child is ¼. What is the probability that 2 will be normal and 1 will be albino?Q1: What is the probability that a child with one parent who has an autosomal dominant disorder will inherit the disease? Q2: Why are there no carriers with a dominant genetic disorder? Q3: Because dominant genetic disorders are rare, it is extremely rare for both parents to have the condition (genotype Aa). Draw a Punnett square with two Aa parents. What proportion of the offspring would have the disorder? What proportion would be normal?At her first prenatal visit, a woman relates that her maternal aunt has cystic fibrosis, an autosomal recessive illness. Which of the following statements is appropriate for the nurse to make? a. It is unnecessary for you to worry since our aunt is not a direct relation." b. "We can check to see whether or not you are a carrier for cystic fibrosis." c. "You should have an amniocentesis to see whether or not your child has the disease." d. Please ask your mother whether she has ever had any symptoms of cystic fibrosis
- Answer 2 Duchenne muscular dystrophy is a sex-linked recessive disorder characterized by a progressive loss of muscle tissue. Neither Carla nor Rudy has Duchenne muscular dystrophy, but their first son does have it. What can you say about Rudy's or Carla's genotype in relation with the disorder? If the couple has a second child, what is the probability that he or she will also have the disease? Show your answers with a Punnet square.Luisa is a carrier of the allele for Tay-Sachs but has no sign of any eye disorder in her family. Shemarried Gerard whose mother was afflicted with retinitis pigmentosa, unlike his father. Neither of hisparents has any history of Tay-Sachs disease. 1. What are the genotypes of Luisa and Gerard? 2. If they plan to have five children, what is the probability that: a. all their children will be normal?b. they will have a daughter with retinitis pigmentosa? c. they will have a son inflicted with both conditions? d. at least 2 will be normal? (show COMPLETE solutions for this question)Hemophilia is a recessive sex-linked disorder (Xh). A man with hemophilia and a female carrier are concerned about their daughter inheriting the disorder. Fill in the Punnett square below by determining the gene combinations for squares 1-4. Based on your Punnett square, explain to these parents the probability (percent chance) that their daughter could have the disorder. XH X" X" Y 1 3 2 4