Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 19, Problem 19P
During a visit with your grandparents, they comment on how tall you are compared with them. You tell them that in your genetics class, you learned that height in humans has high heritability, although environmental factors also influence adult height. You correctly explain the meaning of heritability, and your grandfather asks, “How can height be highly heritable and still be influenced by the environment?” What explanation do you give your grandfather?
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The father of three sons and two daughters begins to show symptoms of Huntington's disease. What is the probability that Sam, the man’s second oldest son (II-2), will suffer from the disease if he lives a normal life span? Sam’s mother and her ancestors do not have the disease. Sam's father was adopted, so we do not know his biological family history for Huntington disease. Explore all possible outcomes for Sam and explain your reasoning. What about the risk to Sam's sisters? Would that be the same or not?
Which of the following choices accurately describe what makes one person different from another with regard to traits (such as height) that have a very high heritability?
Choose all that apply
a) What makes us different is not that we have different genes, but that we have different alleles of many of those genes
b) What makes us different from each other is that we have different genes from each other
c) Random factors during development is the most significant causes of differences between people
d) Most of us have exactly the same genes and alleles, and it’s the environment we were raised in that makes us different
e) None of the other choices are accurate
The relationships between the big five traits and health are complicated. In lecture we learned that negative emotionalityand extroversion are related to health, but what has some of the strongest direct relationships.
Chapter 19 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 19 - Which of the following traits would you expect to...Ch. 19 - 19.2 For the traits listed in the previous...Ch. 19 - Compare and contrast broad sense heritability and...Ch. 19 - 19.4 In a cross of two pure-breeding lines of...Ch. 19 - 19.5 Describe the difference between continuous...Ch. 19 - Prob. 6PCh. 19 - 19.7 Provide a definition and an example for each...Ch. 19 - 19.8 What is a random sample, and why can a random...Ch. 19 - 19.9 Why is heritability an important phenomenon...Ch. 19 - 19.10 Three pairs of genes with two alleles each (...
Ch. 19 - 19.11 In selective breeding experiments, it is...Ch. 19 - 19.12 Two inbred lines of sunflowers produce...Ch. 19 - What is quantitative trait locus (QTL)? Suppose...Ch. 19 - 19.14 In Nicotiana, two inbred strains produce...Ch. 19 - 19.15 Suppose the length of maize ears has narrow...Ch. 19 - In a line of cherry tomatoes, the average fruit...Ch. 19 - 19.17 Two purebreeding wheat strains, one...Ch. 19 - Prob. 18PCh. 19 - During a visit with your grandparents, they...Ch. 19 - 19.20 An association of racehorse owners is...Ch. 19 - Prob. 21PCh. 19 - Suppose a polygenic system for producing color in...Ch. 19 - New Zealand lamb breeders measure the following...Ch. 19 - Cattle breeders would like to improve the protein...Ch. 19 - In human gestational development, abnormalities of...Ch. 19 - The children of couples in which one partner has...Ch. 19 - Answer the following in regard to multifactorial...Ch. 19 - 19.28 Suppose the mature height of a plant is a...Ch. 19 - A three-gene system of additive genes (A, B, and...Ch. 19 - 19.30 Congenital dislocation of the hip is a...Ch. 19 - A total of 20 men and 20 women volunteer to...
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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
- When looking at the trait, birth weight in cattle, the average calf weighs 70 lbs with a standard deviation of 5 lbs. Given this simple information, calculate the following: -What is the range of weight for 68.26% of the population? -What percent of the time would a calf weigh more than 80 lbs? -What percent of the time would a calf weigh less than 55 lbs? ***Make sure to enter your answers using numbers & use decimals when necessary***arrow_forwardWe inherit many traits from our parents. Some physical traits we inherit are eye and hair color, height, skin color, and how big our ears are! We inherit other traits, traits we cannot see. These could include whether or not we are lactose intolerant or if we are prone to diabetes. Other traits we acquire or learn, like reading or how to use a computer.Question: Take a look at this family. Each parent has a different color hair, one blond and one brown. The two children also have blond or brown hair. How do we inherit hair color? Why do the children have the same hair color as their parents? Could these parents have two children with just brown hair? Explain.arrow_forwardWhich of the following statements about complex traits is/are TRUE? Twin studies help to tease apart the contribution of genetic and environmental factors to phenotypic variations. When describing quantitative traits, a high variance indicates that most individual values are not very close to the mean. Genetic factors determine Mendelian traits, while environmental factors determine complex traits. Both additive and dominant effect falls in the category of narrow sense heritability and can be directly passed on from parents to offspring.arrow_forward
- Twin studies are often used in the research of human behavioral traits. Although helpful, there are limitations to these studies. All of the following are limitations to twin studies EXCEPT: Traits are assumed to be simple Mendelian inheritance, discounting additive alleles and epistasis Dizygotic twins will often share more than 50% of their genes Monozygotic twins are often treated more similarity than dizygotic twins O Twins studies are a mechanism to understand the genetic and environmental components of a trait Twins reared apart are often adopted out to families of similar income, ethnicity, and religionarrow_forwardLarsen and Buss present four key research designs used in the behavioral genetic study of personality. Briefly review the key features of these designs and discuss the advantages and disadvantages of each design. Why would it be particularly powerful for a set of results (such as heritability and environmental estimates) to be documented using more than one design? Refer to a specific personality trait in formulating your answer to this questionarrow_forwardMost sheep have the ability to grow coats of wool that vary in their thickness depending on the ambient temperatures that they experience. This is an aspect of phenotypic plasticity, variability in the phenotype that can be triggered by the experiences of the organism. When referring to a sheep that has grown more wool in a cold climate than its parents living in a warm one, what term best describes this? (NOTE: look back at chapter 25, if you are having trouble remembering) O Adaptation Intersexual selection Intrasexual selection Acclimitization Gene Fixationarrow_forward
- How does heritability differ between major trait categories such as morphology, life history, behavior, and physiology? Which trait types are generally most heritable and which are least heritable?arrow_forwardIn the context of genetic influence on individual differences, the degree of genetic influence typically a. increases from infancy through childhood, and then decreases from childhood through adulthood. b. decreases from infancy through adulthood. c. remains stable from infancy through adulthood. d. increases from infancy through adulthood.arrow_forwardA genetics researcher determines that the broad-sense heritability of height among Southwestern University undergraduate students is 0.90. Which of the following conclusions would be reasonable? Explain your answer. a. Sally is a Southwestern University undergraduate student, so 10% of her height is determined by nongenetic factors. b. Ninety percent of variation in height among all undergraduate students in the United States is due to genetic differences. c. Ninety percent of the height of Southwestern University undergraduate students is determined by genes. d. Ten percent of the variation in height among Southwestern University undergraduate students is determined by variation in nongenetic factors. e. Because the heritability of height among Southwestern University students is so high, any change in the students’ environment will have minimal effect on their height.arrow_forward
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Beyond Mendelian Genetics: Complex Patterns of Inheritance; Author: Professor Dave Explains;https://www.youtube.com/watch?v=-EmvmBuK-B8;License: Standard YouTube License, CC-BY