Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 3TYK
Sex-linked traits
- a. are coded for by genes located on a sex chromosome.
- b. are found in only one sex, depending on the sex-determination system of the species.
- c. are always inherited from the mother in mammals and fruit flies.
- d. depend on whether the gene was inherited from the mother or the father.
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Students have asked these similar questions
Describe genetic linkage. What is the role of location on a particular chromosome in determining if two traits are linked?
Describe the role that blood antibodies play in determining which blood types can be transfused into a particular patient. Use several examples to support your assertions.
Sex determination is different in birds and mammals. Describe how this difference in sex determination leads to the different probability of inheriting a sex-linked trait in male and female mammals versus birds.
ch of the following best describes why males cannot be carriers of sex-linked traits?
A. Males cannot be carriers because their Y chromosome makes them immune to sex-linked traits
B. This is incorrect, males can be carriers of sex-linked traits
O C. Males cannot be carriers because they only inherit one X chromosome, either having the trait or not
O D. Males cannot be carriers because their mothers pass on an X chromosome without the sex-linked trait
Which of the following is not true of sex limited traits?
A they are determind by genes on the autosomes.
B they are expressed in only one sex (mal or female).
C they are carrid on the X chromsome.
D they often result in sexual demorphism (very different physical appearance in male and female animals).
Chapter 15 Solutions
Study Guide for Campbell Biology
Ch. 15 - Complete the following summary of Morgans crosses...Ch. 15 - Two normal color-sighted individuals have two...Ch. 15 - In a testcross between a heterozygote tall,...Ch. 15 - With unlinked genes, an equal number of parental...Ch. 15 - The following recombination frequencies have been...Ch. 15 - a. What is the difference between an organism with...Ch. 15 - Prob. 7IQCh. 15 - Prob. 8IQCh. 15 - Mendels law of independent assortment applies to...Ch. 15 - You have found a new mutant phenotype in fruit...
Ch. 15 - Prob. 3SYKCh. 15 - Prob. 4SYKCh. 15 - Thomas Hunt Morgan firmly established the location...Ch. 15 - Prob. 2TYKCh. 15 - Sex-linked traits a. are coded for by genes...Ch. 15 - Prob. 4TYKCh. 15 - Prob. 5TYKCh. 15 - Prob. 6TYKCh. 15 - Prob. 7TYKCh. 15 - Prob. 8TYKCh. 15 - Prob. 9TYKCh. 15 - Prob. 10TYKCh. 15 - Consider three genes on the X chromosome: A, B,...Ch. 15 - Prob. 12TYKCh. 15 - Genomic imprinting a. explains cases in which the...Ch. 15 - Prob. 14TYKCh. 15 - Prob. 15TYKCh. 15 - Suppose that alleles for an X-linked character for...Ch. 15 - Some girls who fail to undergo puberty are found...Ch. 15 - Prob. 18TYKCh. 15 - The genetic event that results in Turner syndrome...Ch. 15 - Prob. 20TYKCh. 15 - Prob. 1GPCh. 15 - Prob. 2GPCh. 15 - Prob. 3GPCh. 15 - Prob. 4GPCh. 15 - Prob. 5GPCh. 15 - Red-green color blindness is caused by a...
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- Which of the following statements is TRUE? Overexpression of the X-chromosome in the somatic cells of males a. leads to the formation of a Barr body in male cells' nuclei. b. leads to cellular mosaicism in males hemizygous for an X-linked gene. c. is characteristic of all XY systems of sex determination. d. is the mechanism in flies to compensate for the higher dosage of X-linked genes in females as compared to males. e. None of the abovearrow_forwardWhich of the following is not a characteristic of X-linked recessive traits in humans? a. Approximately one-half of the sons of a female carrier are affected. b. More males than females affected. c. Phenotypically normal daughters of affected men are always carriers. d. They cannot be passed from father to son. e. Affected daughters always have an affected mother.arrow_forwardColor blindness in men is controlled by a recessive gene located on the X chromosome. Can a brother and sister with color blindness have another normal brother? A. Yes, if the mother is a carrier. B.Yes, if the mother is homozygous. C.Yes, if the father is heterogametic. D.Yes, if the father is a carrier.arrow_forward
- In organisms with X and Y chromosomes, many more genes can be found on the X chromosome than on the Y chromosome. In mammals, how might this deviate from traits being expressed, according to Mendel? A. Females might exhibit a mix of traits rather than all dominant or all recessive traits. B. Only females will have the traits resulting from the X-linked genes. C. Females will overproduce some proteins in relation to males’ production levels. D. This will not result in individuals deviating from Mendel’s principles.arrow_forwardFragile X is a disorder which causes mental impairment in affected individuals. The trait which is due to a mutation in the FMR1 gene on the X chromosome is inherited in a recessive manner. An unaffected son was born to an affected man and an unaffected woman. The woman’s mother was affected while the father was normal. a. Indicate the gene notation. b. Give the genotype of the son. c. Is it possible for the couple to have an affected daughter? affected son? Derive the genotypic and phenotypic ratios for the offspring. Show and label your solutions properly. d. If the couple has four children, what is the probability that they will have three normal daughters and one normal son?arrow_forwardWhich of the following statements correctly describes a Y-linked trait? A. It will always be expressed if present in female individuals B. It can be inherited by a daughter for her father C. It can be inherited by a son from his mother D. It will always be expressed if present in male individualsarrow_forward
- When one examines the pattern of inheritance of a trait and finds that it is transmitted from fathers to sons to grandsons (never appearing in the females genotype) what is the conclusion about the inheritance pattern? a. Sex linked b. Sex limited С. Sex related d. X linked e. Sex influenced Red-Green color blindness a. Has its genetic determination on the x chromosome b. Affects more males than females С. Is influenced by somatic sex differentiation d. A and b e. All of thesearrow_forwardA type of baldness is sex –limited such that the allele that causes it is dominant in men and recessive in women. Thus baldness is much more common in men than women even though the locus is on an autosome. How is the pattern of inheritance in this example different from X-linked inheritance of a recessive allele? Group of answer choices A. the trait can be passed from fathers to sons B. the trait can be passed from fathers to daughters C. the trait can be passed from mothers to sons D. the trait can be passed from mothers to daughtersarrow_forwardChoose the statement that is incorrect.a. A son can inherit a recessive allele on anX chromosome from either parent.b. An individual may inherit three or more of eachtype of chromosome characteristic of the species, acondition called polyploidy.c. A female child inherits one X chromosome from hermother and one from her father.d. Pedigree analysis can be used to determine a futurechild’s chance of being born with achondroplasiaarrow_forward
- Locus heterogeneity refers to a genetic disorder thata. has a heterogeneous phenotype.b. is caused by mutations in two or more different genes.c. involves a structural change in multiple chromosomes.d. is inherited from both parents.arrow_forwardIn diseases with a recessive inheritance linked to sex (X chromosome), from the mother: A. 50% of women and 50% of men are affected. B. The woman is always affected by the disease. C. The man is always affected by the disease. D. 50% of women are affected.arrow_forwardThe dosage of X chromosome expression is equalized between male and female mammals. Think about the example of calico cats to answer the following questions. Use Xb to represent the allele for black fur, XB to represent the allele for orange fur. What genotype(s) of female cats is/are expected to have a calico coat? Is it possible to have a calico cat that is male? Explain.arrow_forward
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