Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 15, Problem 6TY
Summary Introduction
Introduction:
The pedigree chart can be used to depict the complete history of patterns of inheritance of disease from one generation to the next generation. A recessive allele is a type of allele that can only create a
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In a pedigree, which of the following shapes indicates a male individual?
Circle
Square
Diamond
Consider an autosomal dominant trait with reduced penetrance and complete expressivity. What might you expect to see on a pedigree diagram for a family with all affected individuals may not have an affected parent (the trait appears to skip generations).
more than one of the options listed here
affected males always pass the trait to daughters but never to sons
only one sex displays the trait
all affected individuals have an affected parent (the trait does not appear to skip generations)
Which of the following would not be observed in a pedigree if agenetic disorder was inherited in a recessive manner?a. Two unaffected parents have an affected offspring.b. Two affected parents have an unaffected offspring.c. One affected and one unaffected parent have an unaffectedoffspring.d. All of the above are possible for a recessive disorder
Chapter 15 Solutions
Principles of Biology
Ch. 15.1 - Prob. 1CCCh. 15.1 - Why are the stamens removed from the purple...Ch. 15.1 - Prob. 3CCCh. 15.1 - Prob. 4CCCh. 15.1 - Prob. 5CCCh. 15.1 - Prob. 1TYKCh. 15.1 - Prob. 2TYKCh. 15.2 - Prob. 1BCCh. 15.2 - Prob. 2BCCh. 15.2 - Lets suppose that a cell is heterozygous for three...
Ch. 15.2 - Prob. 1TYKCh. 15.2 - Which phase of cellular division explains Mendel*s...Ch. 15.3 - Prob. 1CCCh. 15.3 - Prob. 2CCCh. 15.3 - Prob. 1TYKCh. 15.4 - Prob. 1CCCh. 15.4 - In pea plants, P is a dominant allele that confers...Ch. 15.4 - The effects of a gene may be pleiotropic because...Ch. 15.5 - Prob. 1CCCh. 15.5 - Prob. 1TYKCh. 15.5 - Prob. 2TYKCh. 15 - Experimental advantages of using pea plants...Ch. 15 - Which of the following phenomena cannot be deduced...Ch. 15 - Prob. 3TYCh. 15 - Prob. 4TYCh. 15 - Prob. 5TYCh. 15 - Prob. 6TYCh. 15 - Prob. 7TYCh. 15 - Prob. 8TYCh. 15 - A hypothetical flowering plant species produces...Ch. 15 - Prob. 10TYCh. 15 - Describe the difference between genotype and...Ch. 15 - When examining a human pedigree, what patterns do...Ch. 15 - Prob. 3CCQCh. 15 - Prob. 1CBQCh. 15 - Prob. 2CBQ
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- A dominant eye color brown eyes and a recessive blue eyes. A woman had a brown eyes whose father had blue eyes and whose mother had brown eyes marries a brown-eyed man whose parents are also brown-eyed. That have a son who is blue-eyed. Draw a pedigree showing all four grand parent, the two parents and the son. And label all the genotypes.arrow_forwardWhich of the following best describes the type of inheritance shown in the pedigree below ? A. Autosomal Dominant because the trait is present in every generation B.Autosomal Recessive because the trait skips a generation C.Sex-linked Recessive because it skips a generation and is mostly found in males D.None of the abovearrow_forwardThe pedigree below shows the inheritance of a certain disorder. Based on the pedigree chart, is the brachydactyly trait in pedigree dominant or recessive? Explain.arrow_forward
- What are the genotypes of the mother and father in the pedigree below? The pedigree shows albinism (an autosomal recessive trait). The shaded shapes represent albino individuals. a. mother - homozygous dominant; father - homozygous dominant b. mother - heterozygous; father - homozygous recessive c. mother - homozygous recessive; father - heterozygous d. mother - heterozygous; father - heterozygous e. mother - homozygous dominant; father - homozygous recessivearrow_forwardThe following pedigree traces the inheritance of a certain genetic disease in a family. The circles represent women and the squares represent men. Individuals with darkened shapes have the disease, while individuals with white shapes do not. The lines indicate the relationship between individuals, either through marriage or by birth. Study the chart and then answer the question. How many women have the disease in this pedigree? Five One Fourarrow_forwardThe pedigree shown here involves a trait determined by a singlegene (affected individuals are shown in black). Which of the following patterns of inheritance are possible for this trait?A. RecessiveB. X-linked recessiveC. DominantD. Sex-influenced, recessive in malesE. Sex-limitedarrow_forward
- A human disease known as cystic fibrosis is inherited as a recessive trait. Two unaffected individuals have a child who has the disease. What is the probability that their next two children will NOT have the disease?arrow_forwardTay-Sachs disease is a recessive genetic disease. Two individuals, both of whom are heterozygous for a recessive allele that causes the disease have one child who does not have the disease. What is the probability that this child has the potential to pass the disease-causing allele on to the next generation? Tay-Sachs disease is a recessive genetic disease. Two individuals, both of whom are heterozygous for a recessive allele that causes the disease have one child who does not have the disease. What is the probability that this child has the potential to pass the disease-causing allele on to the next generation? 1/4 1/2 3/4 2/3arrow_forward(Recessive Sex-linked Trait) A family has four children, two girls and two boys. One girl and one boy are color-blind. Are their parents color-blind? Draw and Label a pedigree.arrow_forward
- The following pedigree shows the inheritance of Huntington’s disease, a fatal genetic disorder that causes neurodegeneration. Since signs and symptoms usually do not appear until adulthood, many who are carriers may not realize their risk of passing on the disease-causing allele. The following pedigree represents a family in which some people are affected by Huntington’s disease. Using just the information on this pedigree, is Huntington’s disease caused by a dominant allele or recessive alleles? What are the genotypes of the grandparents (I-1 and I-2)? What are the genotypes of the parents (II-6 and II-7)? If the parents above have another child, what is the chance that they will be affected by the Hungtington’s disease allele? What are the genotypes of the unaffected children (III-8, 9, 10)? What is the chance that the unaffected children above will pass on a Huntington’s disease allele to their children? What is the genotype of the affected child (III-11)? What is the chance…arrow_forwardAn unaffected woman for a human disorder marries and unaffected man and they have children. This results in 3 affected sons, and one unaffected daughter, which ends up having children later on with an unaffected man and has 2 affected sons. Please help draw a simple pedigree diagram for this family and please include a legend.arrow_forwardIn a testcross, the parent that is homozygous recessive for the genes being studied is called the testcross parent. The parent that has the dominant phenotype of the genes being studied is called the non-testcross parent.Which of the following is NOT a reason that a testcross is a useful technique when studying the inheritance of a trait? a. A testcross can determine if an individual with the dominant phenotype is homozygous or heterozygous. b. The relative frequencies of the different phenotypes among the testcross progeny can be used to map linked genes. c. Because the testcross parent can contribute only recessive alleles, the alleles contributed by the other parent will be expressed in the offspring of the testcross. d. The gametes produced by the testcross parent are determined from the testcross progeny.arrow_forward
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