Concepts of Genetics (12th Edition)
12th Edition
ISBN: 9780134604718
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 4, Problem 34PDQ
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Chapter 4 Solutions
Concepts of Genetics (12th Edition)
Ch. 4 - In the guinea pig, one locus involved in the...Ch. 4 - In some plants a red flower pigment, cyanidin, is...Ch. 4 - Below are three pedigrees. For each trait,...Ch. 4 - Researching their family histories, a deaf couple...Ch. 4 - Researching their family histories, a deaf couple...Ch. 4 - HOW DO WE KNOW? In this chapter, we focused on...Ch. 4 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 4 - In shorthorn cattle, coat color may be red, white,...Ch. 4 - In foxes, two alleles of a single gene, P and p,...Ch. 4 - In mice, a short-tailed mutant was discovered....
Ch. 4 - List all possible genotypes for the A, B, AB, and...Ch. 4 - With regard to the ABO blood types in humans,...Ch. 4 - In a disputed parentage case, the child is blood...Ch. 4 - The A and B antigens in humans may be found in...Ch. 4 - In chickens, a condition referred to as creeper...Ch. 4 - In rabbits, a series of multiple alleles controls...Ch. 4 - Three gene pairs located on separate autosomes...Ch. 4 - As in Problem 12, flower color may be red, white,...Ch. 4 - Horses can be cremello (a light cream color),...Ch. 4 - With reference to the eye color phenotypes...Ch. 4 - Pigment in mouse fur is only produced when the C...Ch. 4 - In rats, the following genotypes of two...Ch. 4 - Given the inheritance pattern of coat color in...Ch. 4 - In a species of the cat family, eye color can be...Ch. 4 - In a plant, a tall variety was crossed with a...Ch. 4 - In a unique species of plants, flowers may be...Ch. 4 - Five human matings (15), identified by both...Ch. 4 - A husband and wife have normal vision, although...Ch. 4 - In humans, the ABO blood type is under the control...Ch. 4 - In Drosophila, an X-linked recessive mutation,...Ch. 4 - Another recessive mutation in Drosophila, ebony...Ch. 4 - In Drosophila, the X-linked recessive mutation...Ch. 4 - While vermilion is X-linked in Drosophila and...Ch. 4 - In a cross in Drosophila involving the X-linked...Ch. 4 - Consider the three pedigrees below, all involving...Ch. 4 - In goats, the development of the beard is due to a...Ch. 4 - Predict the F1 and F2 results of crossing a male...Ch. 4 - Two mothers give birth to sons at the same time at...Ch. 4 - Discuss the topic of phenotypic expression and the...Ch. 4 - Prob. 35PDQCh. 4 - Labrador retrievers may be black, brown...Ch. 4 - A true-breeding purple-leafed plant isolated from...Ch. 4 - In Dexter and Kerry cattle, animals may be polled...Ch. 4 - A geneticist from an alien planet that prohibits...Ch. 4 - The following pedigree is characteristic of an...Ch. 4 - Students taking a genetics exam were expected to...Ch. 4 - In four oclock plants, many flower colors are...Ch. 4 - Below is a partial pedigree of hemophilia in the...
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- Describe how traits can exhibit incomplete penetrance and vary in their expressivity.arrow_forwardOver 300 genetic defects can be detected now by examining a karyotype. Its true or false? Explainarrow_forwardDetermine the justification for variation in the phenotypic expression of MERRF in identical twins.arrow_forward
- There are two genes that determine the coat colour expression in some dogs: eumelanin and merle. These genes are located on two separate chromosomes. For the eumelanin gene, black coat colour (E) is dominant over red coat colour (e). The merle gene controls the degree to which these coat colours are expressed through incomplete dominance. The following table describes the merle gene expression. Genotype Phenotype MM White Mm Half colour (Grey or light red) mm Full colour (Black or Red) A grey dog that is heterozygous for the eumelanin gene mates with a light red dog. 1. What is the probability they would have a grey puppy? 2. What is the probability they would have a grey or light red puppy?arrow_forwardIs Punnett square is used to predict possible genetic outcomesarrow_forwardThere are two genes that determine the coat colour expression in some dogs: eumelanin and merle. These genes are located on two separate chromosomes. For the eumelanin gene, black coat colour (E) is dominant over red coat colour (e). The merle gene controls the degree to which these coat colours are expressed through incomplete dominance. The following table describes the merle gene expression. Genotype Phenotype MM White Mm Half colour (Grey or light red) mm Full colour (Black or Red) Two dogs heterozygous for both traits were crossed. What phenotypic ratio is expected in the F1 generation? Answer: Phenotype: White Grey Black Light Red Redarrow_forward
- What is polygenic inheritance? Discuss the issues that make polygenicinheritance difficult to study.arrow_forwardThere are two genes that determine the coat colour expression in dogs: eumelanin and merle. These genes are located on two separate chromosomes.For the eumelanin gene, black coat colour (E) is dominant over red coat colour (e).The merle gene controls the degree to which these coat colours are expressed through incomplete dominance.The following table describes the merle gene expression. Genotype Phenotype MM White Mm Half colour (Grey or light red) mm Full colour (Black or Red) A grey dog that is heterozygous for the eumelanin gene mates with a light red dog. What is the probability they would have a grey or light red puppy? Select one: a. 0.50 b. 0.13 c. 0.38 d. 0.25arrow_forwardTraits like sickle cell anemia that are masked in the presence of the normal gene are said to be _______.Traits like hemophilia that are always expressed in the Male but may be hidden in the female are said to be ________.arrow_forward
- Y-linked Amelogenesis imperfecta (A), a congenital disorder that affects the formation of the teeth enamel making affected individuals at higher risk for dental cavities and related problems. X-linked dominant hypophosphatemia (H), a form of rickets or vitamin D deficiency that affects the bones which causes pain, osteoarthritis, and abnormal shapeabnormal shape. X-linked recessive progressive Duchenne muscular dystrophy (m), a muscular disorder, leading to an irreversible gradual wasting of skeletal muscles. Hannah, the same as her mom, is heterozygous for both X-linked traits. While her dad is suffering from both muscular dystrophy and hypophosphatemia. Hannah's husband, Joey has a mom suffering from musculardystrophy regardless of having normal bone conditions. His dad has been blessed with strong muscles and bones, however, he is suffering from amelogenesis imperfecta. What are the complete genotypes of each person?a. Joey's momb. Joey's dadc. Joeyd. Hannah's mome. Hannah's dad f.…arrow_forwardHow is it that asymmetric cell division influences gene regulation? What are the factors that determine phenotype? and how the phenotypic expression goes beyond simple Mendelian models.arrow_forwardCreate a hypothetical person and situation as a real life example to illustrate your position. Who is this person? How old is this person? What chromosomal abnormalities does this person have? How does genetic testing and counseling make this person’s life better or worse? Ultimately, should your hypothetical person seek genetic counseling?arrow_forward
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