6. An X-linked ichthyosis is a recessive form of a family of skin diseases caused by a hereditary deficiency of the steroid sulfatase (STS) enzyme. A woman heterozygous for this mutation mates with the phenotypically normal man and produces an XXY son who suffers from the disorder. Which of the answer choices can explain this result? Briefly justify your answer. A) nondisjunction in meiosis I in the father B) nondisjunction in meiosis I in the mother C) nondisjunction in meiosis II in the father D) nondisjunction in meiosis II in the mother

6. An X-linked ichthyosis is a recessive form of a family of skin diseases caused by a hereditary deficiency of the steroid sulfatase (STS) enzyme. A woman heterozygous for this mutation mates with the phenotypically normal man and produces an XXY son who suffers from the disorder. Which of the answer choices can explain this result? Briefly justify your answer. A) nondisjunction in meiosis I in the father B) nondisjunction in meiosis I in the mother C) nondisjunction in meiosis II in the father D) nondisjunction in meiosis II in the mother

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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F. 9. If a man who is heterozygous marries a woman who is homozygous recessive, what would you predict for the genotypes and phenotypes of their children? Can a man and a woman who both suffer from hypercholesterolemia have children who do not have the disease? Explain your answer. Can a man and a woman have children with hypercholesterolemia if neither of them has the disease. Explain your answer. Hr homorgo
6) Duchenne muscular dystrophy (DMD) is a muscle wasting disease and is an X-linked recessive disorder. A man with this disease has children with a woman who does not have the disease, but her father did. If they had a ason, what would be the chance that he would have DMD? If they had a daughter? Any child? Construct a Punnett square to determine the answers. 10) In cats, coat color is completely dominant to albino (Mendelian genetics) and is an autosomal trait. Playa is a female albino cat and is crossed with Azul, a black-coated male. In their first litter, they have 4 black kittens and 2 albino kittens. If in the second litter, they have 8 kittens, how many of the kittens are expected to be albino? Construct a Punnett Square to determine the answer.
Explain this to me…..
Explain in detail how does Swyer syndrome occur? (a person who is typically raised as female and has female external genitalia but also has a Y chromosome). It has been noticed in the 2016 Olympics, as it was hotly debated.
Additional problems (Chapter 4 (Extension of Mendelian Inheritance): 1. In rabbits, coloration of the fur depends on alleles of the gene c. From information given in the chapter, what phenotypes and proportions would be expected from the following crosses: a) CC X cc b) Cc x Cc c) Cc x Ccch d) cc x cc 2. From the information given in the chapter about the ABO blood types, what phenotypes and ratios are expected from the following matings: a) type AB x type O b) Type AB x type B individual whose mother is type O c) Type O x Type A individual whose father is type O d) Type Ox type O 3. A woman with type AB blood type gave birth to a baby with type B blood. Two different men claim to be the father. One has type A blood and the other type B blood. Can the genetic evidence decide in favor of either? 4. You have been studying a trait that seems to be present in every generation within a particular family. Further, you have observed that every affected offspring has at least affected parent…
A turkey farmer is worried about a new disease that is found in his birds. If affects females more than males. Which of the following is(are) reason(s) that explain this finding? The disease is sex linked b The disease is autosomal recessive c The disease is located on the Z chromosome d A and C e B and C
2. Compare an autohexaploid and an allohexaploid to each other with respect to the characteristics listed below. Answer auto, allo, both or neither for each statement. (2) a) Forms univalents, bivalents or multivalents during synapsis. b) Originated from 3 different ancestral diploid species. c) Contains 6 homologous copies of every chromosome. d) Forms bivalents during synapsis.
3. An inversion heterozygote has the following inverted chromosome: Centromere )))))))))))) A B JI HGF ED CKLM Inverted region What would be the products if a crossover occurred between the genes F and E on the inverted chromosome and the normal chromosome?
Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells:(a) How a pair of alleles for a single locus segregate in meiosis(b) How the alleles of two unlinked loci assort independently in meiosis(c) How the alleles of two linked loci undergo genetic recombination
37. Which of the following statement is true? A. It is only possible that an X chromosome of a woman is from her father, it is certain. Every woman has an X chromosome from her father and the other X chromosome from her mother. B. In men however the X chromosome comes always from his mother and the Y chromosome is always from his father C. Besides sex genes the sex chromosomes have also autosomal genes, genes that codify several proteins related only to sexual traits D. Diseases caused by abnormal number of sex chromosomes are called sex pseudoploidies 46. Which of the following banding utilizes fluarescent microSEope for microscopic analysis? A. Qbanding B. Rbanding C.G banding D.C banding
Which of the following statements is true? Select one: a. Nondisjunction during anaphase I or anaphase II will have no effect on the gametes formed. b. More gametes will be affected if nondisjunction occurs during anaphase I than if nondisjunction occurs during anaphase II. c. More gametes will be affected if nondisjunction occurs during anaphase II than if nondisjunction occurs during anaphase I. d. Nondisjunction during anaphase I or anaphase II will have the same effect.
3- In nondisjunction disorder, if it happens in meiosis I, it will be to if it happens in meiosis II. a) Less b) More c) Both have the same impact d) None of the above harmful Compared