Campbell Biology In Focus
2nd Edition
ISBN: 9780134203072
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 12.4, Problem 4CC
Women born with an extra X chromosome (XXX) are generally healthy and indistinguishable in appearance from XX women. What is a likely explanation for this finding? How could you test this explanation?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Butterflies have an X-Y sex-determination system that is different from that of flies or humans. Female butterflies may be either XY or X0, while butterflies with two or more X chromosomes are males. This photograph shows a tiger swallowtail gynandromorph, which is half male (left side) and half female (right side). Given that the first division of the zygote divides the embryo into the future right and left halves of the butterfly, propose a hypothesis that explains how nondisjunction during the first mitosis might have produced this unusual-looking butterfly.
Question is also in the picture.
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.
Humans have two different sex chromosomes, X and Y.
Figure 4 below shows the inheritance of sex in humans.
Figure 4
Mother
Father
XX
XX
Y
XY XY
a)
Copy the diagram into your answer booklet and draw a circle on the part
of Figure 4 that shows an egg cell.
b)
What is the genotype of the male offspring?
c)
A man and a woman have two sons. The woman is pregnant with a
third child. What is the chance that this child will also be a boy?
Chapter 12 Solutions
Campbell Biology In Focus
Ch. 12.1 - Which one of Mendels laws relates to the...Ch. 12.1 - MAKE CONNECTIONS Review the description of meiosis...Ch. 12.1 - WHAT IF? Propose a possible reason that the first...Ch. 12.2 - A white-eyed female Drosophila is mated with a...Ch. 12.2 - Neither Tim nor Rhoda has Duchenne muscular...Ch. 12.2 - MAKE CONNECTIONS Consider what you learned about...Ch. 12.3 - When two genes are located on the same chromosome,...Ch. 12.3 - For each type of offspring of the testcross in...Ch. 12.3 - WHAT IF? Genes A, B, and C are located on the same...Ch. 12.4 - About 5% of individuals with Down syndrome have a...
Ch. 12.4 - WHAT IF? The ABO blood type locus has been mapped...Ch. 12.4 - MAKE CONNECTIONS The gene that is activated on the...Ch. 12.4 - Women born with an extra X chromosome (XXX) are...Ch. 12 - A man with hemophilia (a recessive, sex-linked...Ch. 12 - Pseudohypertrophic muscular dystrophy is an...Ch. 12 - A space probe discovers a planet inhabited by...Ch. 12 - Using the information from problem 3, scientists...Ch. 12 - A man with red-green color blindness (a recessive,...Ch. 12 - You design Drosophila crosses to provide...Ch. 12 - A wild-type fruit fly (heterozygous for gray body...Ch. 12 - Assume that genes A and B are 50 map units apart...Ch. 12 - Prob. 9TYUCh. 12 - SCIENTIFIC INQUIRY DRAW IT Assume you are mapping...Ch. 12 - FOCUS ON EVOLUTION Crossing over is thought to be...Ch. 12 - FOCUS ON INFORMATION The continuity of life is...Ch. 12 - SYNTHESIZE YOUR KNOWLEDGE Butterflies have an X-Y...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Practice Problem ATTEMPT
Write the rate expressions for each of the following reactions:
(a)
(b)
(c)
Chemistry
True or false? Some trails are considered vestigial because they existed long ago.
Biological Science (6th Edition)
Single penny tossed 20 times and counting heads and tails: Probability (prediction): _______/20 heads ________/...
Laboratory Manual For Human Anatomy & Physiology
To test your knowledge, discuss the following topics with a study partner or in writing ideally from memory. Th...
HUMAN ANATOMY
How does the removal of hydrogen atoms from nutrient molecules result in a loss of energy from the nutrient mol...
SEELEY'S ANATOMY+PHYSIOLOGY
Gregor Mendel never saw a gene, yet he concluded that some inherited factors were responsible for the patterns ...
Campbell Essential Biology (7th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Using Figure 17-37, calculate what percentage of conceptions are triploid. The same figure shows XO in the spontaneous-abortion category; however, we know that manyXO individuals are viable. In which of the viable categories would XO be grouped?arrow_forwardThe duck-billed platypus has a unique mechanism of sex determination: females have five pairs of X chromosomes (X1X1X2X2X3X3X4X4X5X5) and males have five pairs of X and Y chromosomes (X1Y1X2Y2X3Y3X4Y4X5Y5). Do you think each of the X and Y chromosome pairs in males assorts independently of other X and Y pairs during meiosis? Why or why not?arrow_forwardBarr bodies are formed to adjust X chromosome dosage in species other than humans, such as Drosophila (fruit flies) and C. elegans (nematodes). True or False ?arrow_forward
- A woman with a balanced reciprocal translocation of Chromosomes 4 and 20 (karyotype, right panel below) is trying to reproduce with a man of normal karyotype (left panel below). Please answer: 1) What are the karyotypes of their respective gametes ()? 2) What are the karyotypes of their potential offspring ()? 3) What are the percentages of each karyotype (gametes and offspring) ()? 4) Indicate which karyotype (of the offspring) will be lethal, carrier or normal (). 5) Do she have reduced fertility and why?arrow_forwardWhy does a single X chromosome cause infertility and other abnormalities in Turner Syndrome subjects?arrow_forwardConsider a couple: a woman who is homozygous for a recessive mutation that causes X-linked colorblindness, and a man with full color vision (he does not carry a copy of the mutation). a) What is the probability that a son of this couple will be colorblind? b) What is the probability that a daughter of the couple will be colorblind?arrow_forward
- A human female with Turner syndrome (45,X) also expresses the X-linked trait hemophilia, as did her father. Which of her parents underwent nondisjunction during meiosis, giving rise to the gamete responsible for the syndrome?arrow_forwardA boy with Klinefelter syndrome (47,XXY) is born to a mother who is phenotypically normal and a father who has the X- linked skin condition called anhidrotic ectodermal dysplasia. The boy has patches of normal skin and patches of abnormal skin. Which of the following statemnets likely explains these observations? The father contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis I during spermatogenesis. The mother contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis II during oogenesis. The mother contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis I during oogenesis. The father contributed the extra X chromosome in the son as a result of a non-disjunction in meiosis II during spermatogenesis. Either parent could have contributed to the extra X chromosome in the son as a results of disjunction in either meiosis I or meiosis II during…arrow_forwardOcular albinism is a sex-linked recessive disease carried on the X chromosome. A female carrier mates with a male with this disorder. What percentage of all of their children is predicted to be an albino female? 1) 0% 2) 25% 3) 50% 4) 75% 5) 100%arrow_forward
- A homozygous mother has retinoblastoma, a dominant sex-linked disorder carried on the X chromosome. The father does not have this disorder. What is the chance they will have a child with this disorder? 1) 0% 2) 25% 3) 50% 4) 75% 5) 100% 身arrow_forwardClark Kent and Lois Lane Kent are about to have a (Super) baby. As Superman, Clark possesses amazing traits, including heat-ray vision. Assume that this is: a) a dominant trait, and b) carried on the X chromosome. If Clark and Lois have a boy or a girl, what is the probability that they will possess their father's amazing abilities? (Remember: females have XX chromosomes, while males have XY chromosomes. The Y chromosome doesn’t carry any of the genes on the X chromosome). X H = Superman’s heat-ray vision allele on his X chromosome Y = Superman’s Y chromosome X h = Lois’s normal vision allele on her X chromosomearrow_forwardWhy are people with balanced chromosomal translocations phenotypically normal? Do they suffer from reduced fertility? Why?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781305073951Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
Human Biology (MindTap Course List)BiologyISBN:9781305112100Author:Cecie Starr, Beverly McMillanPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY