Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 7, Problem 15QP
Summary Introduction
To determine: The reason due to which pattern baldness is more common in males than in females even though the gene resides on an autosome.
Introduction: There are obvious
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1.In humans, how does the inheritance of sex-linked traits differ from autosomal traits?
Most autosomal recessive genetic disorders are expressed as ____________________.
dominant disorders
codominant
loss-of-function
gain-of-function
Y-linked Inheritance. Holandric genes are inherited by males only.
Assuming that a man with hypertrichosis is married to a woman and they had children
1. what is the probability that his sons inherit the trait?
2. what is the probability that his daughters inherit the trait?
Chapter 7 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 7.6 - Prob. 1EGCh. 7.6 - Prob. 2EGCh. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - As outlined in this chapter, sex can be defined at...Ch. 7 - Prob. 1QPCh. 7 - The Human Reproductive System Discuss and compare...Ch. 7 - Prob. 3QPCh. 7 - A Survey of Human Development from Fertilization...Ch. 7 - Prob. 5QPCh. 7 - Prob. 6QP
Ch. 7 - Prob. 7QPCh. 7 - How Is Sex Determined? The absence of a Y...Ch. 7 - Prob. 9QPCh. 7 - Mutations Can Uncouple Chromosomal Sex from...Ch. 7 - Prob. 11QPCh. 7 - Mutations Can Uncouple chromosomal Sex from...Ch. 7 - Prob. 13QPCh. 7 - Sex-Influenced and Sex-Limited Traits What method...Ch. 7 - Prob. 15QPCh. 7 - Prob. 16QPCh. 7 - Equalizing the Expression of X Chromosome Genes in...Ch. 7 - Equalizing the Expression of X Chromosome Genes in...Ch. 7 - Equalizing the Expression of X Chromosome Genes in...
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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
- A highly talented 22-year-old female college athlete has just qualified to compete in the Summer Olympics. However, when she is required to undergo laboratory testing to measure testosterone levels, she is informed that she will not be permitted to compete because her testosterone levels are “too high for a female athlete”. Further medical and genetic testing reveal that she has a condition known as Complete Androgen Insensitivity Syndrome. She promptly hires an attorney to appeal the decision. A. What is the chromosomal sex of this female athlete? B. If she were subjected to a cytological test for the presence of a Barr body or bodies, what would typically be found on such a test performed on an individual having this condition? Please EXPLAIN why this is the case.arrow_forwardY-linked Inheritance. One trait that is Y-linked is hypertrichosis of the ears. Suppose a man with hypertrichosis marries and has children, what is the chance of his sons getting the trait? His daughters? Why?arrow_forwardDuchenne muscular dystrophy, which is inherited in an X-linked recessive pattern, nearly always occurs in males. Explain why.arrow_forward
- Why males and females don’t have equal chances of inheriting the trait in Autosomal codominance?arrow_forwardModes of Inheritance for Single Gene Traits • Autosomal Dominant • Autosomal Recessive • X-linked Dominant • X-linked Recessive • Y-linked • Mitochondrial Let us assume that alleles for these traits follow complete dominance.arrow_forwardPhenotypes that are related to the sex can be classified as: sex-linked, sex -limited, or sex-influenced. Sex-linked phenotypes are _____________________________________. produced by autosomal genes (on non-sex chromosomes) that are present in both sexes but are only expressed in one of the two sexes. produced by autosomal genes (on non-sex chromosomes) that are present in both sexes but are more severely expressed in one of the sexes. produced by genes that are present on the X chromosome and are expressed only in the females. produced by genes that are present on the X chromosome and are expressed when present in XY males. None of the other answers are correct.arrow_forward
- Define sex-linked, sex-limited, and sex-influenced patterns of inheritance. Please provide an example. *The question similar to this in the Library was incorrect.arrow_forwardExplain why X-linked recessive traits are often more common in males but X-linked dominant traits are often more common in females.arrow_forwardMale-pattern baldness is an example of a sex-influenced trait. The baldness allele, which causes hair loss, is influenced by the hormones testosterone and dihydrotestosterone, but only when levels of the two hormones are high. In general, males have much higher levels of these hormones than females, so the baldness allele has a stronger effect in males than in females. (B-baldness; N-full or normal) hair) A normal man marries a normal woman. What can be the possible genotypes of the parents respectively? * a. BN x BN b. NN x BN c. NN x bb d. NN x BB e. BN x bb f. BB x BBarrow_forward
- Analysis of X-Linked Dominant and Recessive Traits As a genetic counselor investigating a genetic disorder in a family, you are able to collect a four-generation pedigree that details the inheritance of the disorder in question. Analyze the information in the pedigree to determine whether the trait is inherited as: a. autosomal dominant b. autosomal recessive c. X-linked dominant d. X-linked recessive e. Y-linkedarrow_forwardMutations Can Uncouple chromosomal Sex from Phenotypic Sex Discuss whether the following individuals (1) have male or female gonads, (2) are phenotypically male or female (discuss Wolffian/Mllerian ducts and external genitalia), and (3) are sterile or fertile. a. XY, homozygous for a recessive mutation in the testosterone biosynthetic pathway, producing no testosterone b. XX, heterozygous for a dominant mutation in the testosterone biosynthetic pathway, which causes continuous production of testosterone c. XY, heterozygous for a recessive mutation in the MIH gene d. XY, homozygous fora recessive mutation in the SRY gene that abolishes functionarrow_forwardVariations in Phenotype Expression Define penetrance and expressivity.arrow_forward
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