a.
To determine:
The following each type of mating indicates whether nondisjunction took place in mother or father, or whether it took place in meiosis I or meiosis II.
Introduction:
Non-disjunction occurs during cell division when chromosomes do not divide properly, it can occur in mitosis, meiosis I or II; these are three forms of non-disjunction.
Turner syndrome is a chromosomal disorder that affects females; it is a condition when females partially or completely miss their X chromosome.
Klinefelter syndrome is a genetic disorder that affects males, it results in two or more X chromosomes in males, and this condition also affects sterility and testicles.
a.
Answer to Problem 29AQP
Non-disjunction took place in mother.
Explanation of Solution
Non-disjunction occurs during cell division when chromosomes do not divide properly, it can occur in mitosis, meiosis I or II, in this mating process, the child received no maternal X chromosomes, and the non-disjunction must have taken place in the mother, in either meiosis I or meiosis II.
Turner syndrome is a chromosomal disorder, it affects females, and it is a condition when females partially or completely miss their X chromosomes.
b.
To determine:
The following each type of mating indicates whether nondisjunction took place in mother or father, or whether it took place in meiosis I or meiosis II.
Introduction:
Non-disjunction occurs during cell division when chromosomes do not divide properly, it can occur in mitosis, meiosis I or II; these are three forms of non-disjunction.
Turner syndrome is a chromosomal disorder that affects females; it is a condition when females partially or completely miss their X chromosome.
Klinefelter syndrome is a genetic disorder that affects males, it results in two or more X chromosomes in males, and this condition also affects sterility and testicles.
b.
Answer to Problem 29AQP
Non-disjunction took place in father.
Explanation of Solution
In this mating process, the child has not received sex chromosome from the father, so the non-disjunction took place in the father.
Turner syndrome is caused by partial or complete deletion of the X chromosome, it can be passed from one generation to another generation.
c.
To determine:
The following each type of mating indicates whether nondisjunction took place in mother or father, or whether it took place in meiosis I or meiosis II.
Introduction:
Non-disjunction occurs during cell division when chromosomes do not divide properly, it can occur in mitosis, meiosis I or II; these are three forms of non-disjunction.
Turner syndrome is a chromosomal disorder that affects females; it is a condition when females partially or completely miss their X chromosome.
Klinefelter syndrome is a genetic disorder that affects males, it results in two or more X chromosomes in males, and this condition also affects sterility and testicles.
c.
Answer to Problem 29AQP
Non-disjunction took place in father and in meiosis I.
Explanation of Solution
Klinefelter syndrome is a genetic disorder, which affects males, it results in two or more X chromosomes in males, and it also affects the sterility and testicles.
In this mating process, the child has received both the
d.
To determine:
The following each type of mating indicates whether nondisjunction took place in mother or father, or whether it took place in meiosis I or meiosis II.
Introduction:
Non-disjunction occurs during cell division when chromosomes do not divide properly, it can occur in mitosis, meiosis I or II; these are three forms of non-disjunction.
Turner syndrome is a chromosomal disorder that affects females; it is a condition when females partially or completely miss their X chromosome.
Klinefelter syndrome is a genetic disorder that affects males, it results in two or more X chromosomes in males, and this condition also affects sterility and testicles.
d.
Answer to Problem 29AQP
Nondisjunction took place in mother and in meiosis II.
Explanation of Solution
Klinefelter syndrome is a genetic disorder, aneuploidy of the sex chromosome, involving an XXY chromosomal constitution. In this mating process, the child has received two copies of X genes from the mother, hence the non-disjunction took place in mother and in meiosis II, where sister chromatids failed to separate.
Want to see more full solutions like this?
Chapter 4 Solutions
Genetics: A Conceptual Approach 6E w/ SaplingPlus (Six-Month Access)
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education