Essentials of Genetics (9th Edition) - Standalone book
9th Edition
ISBN: 9780134047799
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 3, Problem 6PDQ
When working out genetics problems in this and succeeding chapters, always assume that members of the P1 generation are homozygous, unless the information or data you are given require you to do otherwise.
Why was the garden pea a good choice as an experimental organism in Mendel's work?
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When working out genetics problems in this and succeeding chapters, always assume that members of the P1 generation are homozygous, unless the information or data you are given require you to do otherwise.HOW DO WE KNOW? we focused on the Mendelian postulates, probability, and pedigree analysis. We also considered some of the methods and reasoning by which these ideas, concepts, and techniques were developed. On the basis of these discussions,
what answers would you propose to the followingquestion.
Question: Since experimental crosses are not performed in humans, how do we know how traits are inherited?
Question 9B
If Mendel had done his experiments using flies instead of peas, what factors would he have to have
dealt with that weren't factors with the system that he used? Would he have been likely to have
come to the same conclusions using flies instead of peas?
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Question GROUP A: Genetics Problems
In humans, red-green color blindness is caused by a recessive allele on the X chromosome. A
male with normal vision and his color-blind wife have a child. If the child is male what is the
probability that he will be color-blind?
The female in the previous problem has a daughter that is color-blind. The husband claims that
this cannot be his child. Can you support or refute his argument?
Chapter 3 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 3 -
CASE STUDY | To test or not to test
Thomas...Ch. 3 -
CASE STUDY | To test or not to test
Thomas...Ch. 3 - CASE STUDY | To test or not to test Thomas first...Ch. 3 -
CASE STUDY | To test or not to test
Thomas...Ch. 3 - When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 -
When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 -
When working out genetics problems in this and...
Ch. 3 - When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 -
When working out genetics problems in this and...Ch. 3 -
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When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 -
When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 -
When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 -
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When working out genetics problems in this and...Ch. 3 - When working out genetics problems in this and...Ch. 3 - Prob. 26PDQCh. 3 -
When working out genetics problems in this and...
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- Required Question Y Question T The ability to taste certain substances, such as PTC is also genetically controlled. People that can taste have a dominant allele (T), while non-tasters have the recessive alleles (tt). Suppose a woman who is a non-PTC-taster has offspring with a man who is a homozygous PTC taster. What is the probability that they have a child with the tasting gene? O 25% 850% © 75% O100%arrow_forward1:31 1 Drive For each of the problems below, please make sure to... Write a DETAILED KEY that explains all of your symbols used. Show your work on problems that ask. That means make sure that you are showing at least one Punnett square. Interpret your answer. A Punnett square alone will not suffice. Indicate which types of problems or vocabulary are difficult for you so that we can review them in discussion. Monohybrid cross: A single trait is crossed with only two variations of the allele. with 2. In humans, brown eyes are usually dominant over blue eyes. Suppose a blue-eyed man marries a brown-eyed woman whose father was blue eyed. What proportion of their children would you predict would have blue eyes? A brown-eyed man whose father was brown eyed and whose mother was blue eyed married a blue eyed woman whose father and mother were both brown-eyed. The couple has a blue-eyed son. For which of the individuals mentioned can you be sure 3. of the genotypes? What are their genotypes?…arrow_forwardQuestion 16 Mendel noted in his experiments with pea plants that certain traits disappeared in the F1 generation, only to reappear in the F 2 generation. Which of the following statements correctly describes the reason for this? The mechanisms controlling the appearance of traits in the F1 and F2 plants were different. Members of the F1 generation had only one allele for each trait, but members of the F2 generation had two alleles for each trait. New mutations were frequently generated in the cross that generated the F2 generation. Traits can be dominant or recessive, and the recessive traits are "hidden" by the dominant ones in the F1 generation.arrow_forward
- Question: This is a normal 3 point test cross, except that instead of regular phenotypes, you are looking at DNA markers on a gel. One parent, according to the gel, is heterozygous at each marker. The other parent is homozygous for each marker. (Again, this means it is a test cross: AaEeHh x AAEEHH --but don't be confused by that, because these are not "dominant" and "recessive" per se; the phenotype is just a band on a gel). For each offspring, figure out its genotype (homozygous or heterozygous for each gene. Then, figure that one parent made only AEH gametes, so you can cross that out if it helps.) Then treat it pretty much the same as a 3 point test cross.arrow_forwardQuestion: On the basis of Mendel's hypothesis and observations, predict the results from the following crosses in garden peas: (a) a tall (dominant and homozygous) variety crossed with a dwarf variety: (b) the progeny of (a) selfed; (c) the progeny from (a) crossed with the original tall parent; (d) the progeny from (a) crossed with the original dwarf-parent variety.arrow_forwardQuestion 31 PART I-Problem Solving A clinical geneticist is investigating a new, rare syndrome, which is believed to be a single gene disorder. The symptoms include impaired cellular respiration, decreased exercise tolerance, and progressive nerve cell death. Filled squares are affected individuals, and the intensity of the shading indicates the severity of the symptoms. Open squares are individuals that show no symptoms. Those marrying in from outside the family can be assumed o be normal genotype. A. What is the mode of inheritance of this condition? Give your reasoning. (21) B. Individual i is asymptomatic but has passed on the disease. Give TWO terms that are appropriate to describe this situation in context. (6) C. What is the risk to future children of individual ii and why? (6)arrow_forward
- question 5a on the worksheet. Do i accept or reject the null hypothesis?arrow_forwardRequired information A single-factor cross is one in which the inheritance of only one character and its associated genotypes are followed. Punnett squares are often used to predict the outcomes of simple genetic crosses. Based on Mendel's laws, the genotypes of the parents can be used to predict the genes in their gametes and the resulting progeny. A Punnett square enables you to predict the types of offspring the parents are expected to produce and in what proportions. Sickle cell anemia is a recessive trait in humans. In a cross between two parents who are heterozygous for the gene, what are the gamete possibilities of the parer Mother's gamete possibilities Father's gamete possibilities of 19 Show All MacBook Air 田arrow_forwardQUESTION 4 In Mendel's pea plants, round shape (R) is dominant to wrinkled shape (r), and yellow color (Y) is dominant to green color (y). The alleles for seed shape and seed color sort independently. In the parental generation, Mendel crossed a true-breeding round, yellow-seeded plant with a true-breeding wrinkled, green-seeded plant to create an F1 generation. He then crossed the F1 offspring to eachother to create the F2 generation. What is the probability Mendel would observe F2 plants with round and green seeds? O 3/16 O9/16 1/8 01/4 1/2 QUESTION 5 specific example of incomplete penetrance is the human bone disease osteogenesis imperfecta (OI). The majority of people with this disease have a dom utation in one of the hun nonce that produce hme 1 collagen COL1A1 or COL1A2 Raced on the DNA testing of a family with 15 membere amemhare he Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Airarrow_forward
- Question 7 Review non Mendelian genetics. Match the example and its genetics. Each term can only be used once. The coat color of Labrador retrievers and many other mammals is an example of | Choose J The human height and skin color are example of this inheritance. | Choose ABO blood group is an example of | Choose J Snapdragon flower color is an example of [ Choose The hydrangeas flower color growing in different pH environments has a different color. This is an example of | Choose )arrow_forwardQuestion 1 You are doing a genetics experiment with the fruit fly. In the "P" generation, you cross two true-breeding flies. The female parent is brown and wingless and the male parent is black with normal wings. All of the flies in the F1 generation are brown and have normal wings. Indicate the alleles associated with dominant phenotypes by uppercase letters and alleles associated with recessive phenotypes by lowercase letters. Assume the genes are not found on a sex chromosome. Indicate the color alleles as "B" and "b" the wing alleles by the letters "N" and "n". a) The genotypes of the flies in the P generation are: female and male. b) The genotype of the flies in the F1 generation is: c) You now take an F1 female and cross her to a true-breeding black, wingless male. This male's genotype is: d) You count 1600 offspring in the F2 generation. If the wing and the color traits were linked and no recombination occurred, you would expect to count: # of brown, winged flies (of the…arrow_forwardQUESTION 2 In a Phenome-wide Association Study (PheWAS) where we are trying to link genotypes and phenotypes, with which of the following do we start with when designing our study? Start with the Genotype of Interest Start with the Phenotype of Interest Start with either the Genotype or the Phenotype Start with neither the Genotype nor the Phenotypearrow_forward
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