F. If a man who is heterozygous marries a woman who is homozygous recessive, what and phenotypes of their children? would you predict for the genotypes Can a man and a woman who both suffer from hypercholesterolemia have children who do not have the disease? Explain your answer. marries SA Can a man and a woman have children with hypercholesterolemi if neither of them has the disease. Explain your answer.

F. If a man who is heterozygous marries a woman who is homozygous recessive, what and phenotypes of their children? would you predict for the genotypes Can a man and a woman who both suffer from hypercholesterolemia have children who do not have the disease? Explain your answer. marries SA Can a man and a woman have children with hypercholesterolemi if neither of them has the disease. Explain your answer.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter16: Human Genetics And The Human Genome

Section: Chapter Questions

Problem 10TYU: Examine the following pedigrees. Which is the most likely mode of inheritance of each disorder? (a)...

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12. A. B. C. A certain type of migraine headache (M) is dominant to no migraines (m). What is the genotype of a man who has migraine headaches if his father did not have them? What is the genotype of a man who has migraine headaches if his mother did not have them? If a woman without migraines marries a man who is heterozygous for migraines, what would you expect for the genotypes and phenotypes of their children? If two people who are heterozygous for migraines marry and have children, what would you expect for the genotypes and phenotypes of the children.
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?
SQ5 Two people are considering having children, but they each have family members that died of a rare recessive autosomal disorder. For the man, it was his brother and for the women, it was her mother’s sister (her aunt). What is the probability they will have an affected child?
a. The ability to taste the chemical phenylthiocarbamideis an autosomal dominant phenotype, and the inabilityto taste it is recessive. If a taster woman with a nontasterfather marries a taster man who in a previous marriagehad a nontaster daughter, what is the probability thattheir first child will be(1) A nontaster girl(2) A taster girl(3) A taster boyb. What is the probability that their first two childrenwill be tasters of either sex?
O O c. A person who has a gene allele for a disorder with reduced penetrance (60%) that is transmittedin an autosomal dominant pattern and is usually expressed after age 30 has reached the age of 50 without any manifestations of the disorder. He now states that he wishes that he had decided to have children now that he knows he cannot pass the disorder on to any children he fathered. Is this man's thinking correct? Explain This person is not right because he can still pass the disorder to his offspring. Penetrance is the proportion of individuals carrying a particular variant (or allele) of a gene (the genotype) that also express an associated trait (the phenotype). The individual exhibits signs and symtoms of genetic disorder. He did not develop features of the disorder, the condition is said to have reduced (or incomplete) penetrance. He is a carrier of the allele for this disorder. As carrier he can give the genetic information to his child who could have a complete penetrance and…
17-19. A man and women of normal phenotype have a son with Duchenne muscular dystrophy, a sex-linked recessive disorder. They are planning to have another child and you ask for genetic counseling for the following: A. What is the likelihood that another child will have this disease if it is a boy?___ B. What is the likelihood that another child will have the disease if it is a girl? C. What is the overall chance of any child in their family getting the disease? OA= 1/4 or 25%, B = 0%, C = 3/4 or 75% A = 1/2 or 50%, B = 1/2 or 50%, C = 1/4 or 25% OA = 1/2 or 50%, B = 0%, C = 1/4 or 25% A = 0%, B = 0%, C = 1/4 or 25%
6. The pedigree below traces the inheritance of a particular disorder. Circles are females, squares are males. Shaded symbols are affected with the disorder (NOTE: "half-shaded" symbols are NOT used here, for heterozygous individuals). What is the mode of inheritance of this disorder: is it dominant or recessive? Autosomal or X-linked? What is the genotype of the three numbered individuals? 1 2. 3.
3. STATEMENT: Color-blindness is due to a sex-linked recessive gene. A colorblind man marries a normal-visioned woman and they have a colorblind daughter. a) What is the genotype for the man, woman and the daughter? b) The couple decides to have another child, what is the probability their child will be: i. Colorblind? ii. Have a daughter that has normal vision, no colorblindness? They know that they're having a son because they saw the sonogram with a little noticeable Schmeckle (Oscar Meyer weiner). iii.
A. For the following genotypes state the ABO blood phenotype. JAJA |B|O_ 101⁰_ |A|B_ B. Using genetic diagrams, show how it is possible for a couple with a type A mother and a type B father can have a child with type O blood. C. Using genetic diagrams show how a type AB person with a type O partner have offspring that share neither of their phenotypes.
b. The following diagram shows a family tree of individuals with haemophilia. B i. Based on an X-linked recessive pattern of inheritance, work out the likely genotypes of the individuals indicated by the letters. Individual A Individual B Individual C GENOTYPE ii. If individual C has children with a normal male, what are the chances that they will have haemophilia? Explain your answer fully. iii. If individual C has children with a normal male, what are the chances that their daughters will be carriers of the condition? Explain your answer fully.
y 301 Amelogenesis imperfecta is X-linked dominant. Affected XY individuals have extremely thin enamel on the teeth while XX carriers have grooved teeth from uneven deposition of enamel. If an unaffected XY individual were to produce children with a XX carrier partner, a. what would be the expected chance of a XY child being affected with the disease? b. what would be the expected chance of a XY child being affected with the disease?
9. F. A. B. E. C. D. The allele for normal skin pigmentation (A) is dominant to absence of pigmentation (a), albinism. Answer the following questions about the inheritance of this disease. What is the genotype of a woman with normal skin pigmentation who has a baby that is an albino? What is the genotype of the baby in A above? did not have the Can 2 people with normally pigmented skin have a baby that is an albino? Explain your answer. If 2 heterozygous people marry, what is the chance that their first child is an albino? Explain your answer. for the the If the first child from E above is an albino, what is the chance the second child is normal? Explain your answer. Can 2 people who are both albinos have a child who is not an albino? Explain your answer. 40