Human Biology (MindTap Course List)
11th Edition
ISBN: 9781305112100
Author: Cecie Starr, Beverly McMillan
Publisher: Cengage Learning
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Chapter 20, Problem 4RQ
Summary Introduction
To differentiate: X-linked trait and a sex-influenced trait.
Introduction: X-linked traits denote that a gene for a particular trait is located on the X-chromosome. Sex influences traits denote that a gene for a particular trait is located on autosome but is influenced by the sex of that individual.
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Explain the difference between X-linked recessive traits and X-linked dominant traits. What are the possibilities that a female child will be affected and express each of the traits?
Define X-linked
How is the inheritance of X-linked traits different from the inheritance of autosomal traits?
How is the inheritance of X-linked and Autosomal traits similar?
Please make a list of all similarities and differences. Please list a many differences and similarities as possible.
Chapter 20 Solutions
Human Biology (MindTap Course List)
Ch. 20 - Prob. 1RQCh. 20 - What is a carrier of a genetic trait?Ch. 20 - What evidence indicates that a trait is coded by a...Ch. 20 - Prob. 4RQCh. 20 - Explain what nondisjunction is, and give two...Ch. 20 - _______ segregate during ______. a. Homologues;...Ch. 20 - Prob. 2SQCh. 20 - Genes on the same chromosome tend to stay together...Ch. 20 - Prob. 4SQCh. 20 - A chromosomes structure can be altered by _______....
Ch. 20 - Nondisjunction can be caused by ________. a....Ch. 20 - A gamete affected by nondisjunction could have...Ch. 20 - Genetic disorders can be caused by __________. a....Ch. 20 - A person who is a carrier for a genetic trait...Ch. 20 - Prob. 10SQCh. 20 - If a couple has six boys, what is the probability...Ch. 20 - Human sex chromosomes are XX for females and XY...Ch. 20 - People with Down syndrome have an extra copy of...Ch. 20 - Prob. 4CTCh. 20 - Prob. 5CTCh. 20 - About 4 percent of people of Northern European...Ch. 20 - The following pedigree shows the pattern of...
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- If a father is affected by an X-linked dominant condition and the mother is normal, what is the probability of their children being affected? All sons will be affected. Half of the sons will be affected. All daughters will be affected. Half of the daughters will be carriers.arrow_forwardExplain how X-linked inheritance differs from inheritance ofautosomal traits.arrow_forwardWhat are X-linked traits?arrow_forward
- With respect to the inheritance of X-linked recessive traits, which of the following is true? OA mother cannot transmit the recessive allele to her daughter. OA mother cannot transmit the recessive allele to her son. CA father with the trait can pass the trait to his sons. OA father with the recessive allele passes it to all of his daughters. A man with the recessive allele may not express the trait.arrow_forwardPredict the probability (using a Punnett square) of producing an offspring affected by a single gene X-linked mutation given the genotype of the parents. Compare these crosses in two cases: where the mutant allele is “A” vs where the mutant allele is “a” (XAXA x XaY) (XAXa x XAY) (XAXa x XaY) (XaXa x XAY) (XaXa x XaY). Include gender in the phenotype.arrow_forwardOn average, what will be the proportion of X-linked genes in the second individual that are the same as the first individual? A female and her mother. 1. 100% A male and his mother. 2. 50% A female and her father. 3. 0% A male and his father. > >arrow_forward
- Describe how X-linked traits are inherited and explain how X-linked inheritance is different from simple dominance inheritancearrow_forwardWhat is the difference between X-linked dominant and X-linked recessive traits?arrow_forwardThe determiner for brown eyes (B) is dominant to blue eyes (b) and is not X-linked. A colorblind man with brown eyes, whose mother was blue-eyed, marries a blue-eyed woman having normal vision, whose father was colorblind. Show the expected phenotypes ratio of their children involving eye color, color blindness, and sex.arrow_forward
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