Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 28.6, Problem 2COMQ
Summary Introduction
Introduction:
The term ‘selective breeding’ is defined as the practices that are taken into account to produce the offspring of economic importance. This is done by modifying the
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
You estimate the heritability of milk production in the brown cows at your friend’s farm. The heritability is H2=0.45. Identify the following that best describes the conclusions you can make from your study.
a.
Cows that produce milk at lower rates than at your friend’s farm occurs because they have bad genes.
b.
Cow milk production in this population is dependent on both environmental and genetic influence.
c.
Milk production is not heritable in your friend’s population of cows.
d.
Milk production heritability at the farm 15 miles down the road is also likely to be 0.45.
A corn breeder wishes to improve yield. As part of their work, the narrow-sense heritability for corn yield is calculated to be 0.3.
If the average yield in the starting population is 400 and the breeder selects for breeding plants with an average yield of 500,
what will be the expected average yield among the offspring of the selected plants?
A.
530
B.
330
C.
130
D.
430
E.
230
A total of 310 green and golden bell frogs were studied on Broughton Island. It was noted that they seem to be
bolder than those on the mainland. The genetic and environmental (residual) variances for this trait were as follows
VE = 50; VG = 40; VI + D = 10. What is the narrow sense heritability for running speed?
a.
0.80
O b. 0.66
c. 0.14
d. 0.33
e. 0.25
Chapter 28 Solutions
Genetics: Analysis and Principles
Ch. 28.1 - 1. Which of the following is an example of a...Ch. 28.1 - 2. Saying that a quantitative trait follows a...Ch. 28.2 - The variance is a. a measure of the variation...Ch. 28.2 - 2. Which of the following statistics is used to...Ch. 28.3 - 1. For many quantitative traits, genotypes and...Ch. 28.4 - A QTL is a __________ where one or more genes...Ch. 28.4 - 2. To map QTLs, strains are crossed that differ...Ch. 28.5 - 1. In a population of squirrels in North Carolina,...Ch. 28.5 - Prob. 2COMQCh. 28.5 - 3. One way to estimate narrow-sense heritability...
Ch. 28.6 - 1. For selective breeding to be successful, the...Ch. 28.6 - Prob. 2COMQCh. 28 - Give several examples of quantitative traits.How...Ch. 28 - 2. At the molecular level, explain why...Ch. 28 - 3. What is a normal distribution? Discuss this...Ch. 28 - 4. Explain the difference between a continuous...Ch. 28 - What is a frequency distribution? Explain how such...Ch. 28 - 6. The variance for weight in a particular herd of...Ch. 28 - Two different varieties of potato plants produce...Ch. 28 - 8. If , would you conclude that a positive...Ch. 28 - Prob. 9CONQCh. 28 - When a correlation coefficient is statistically...Ch. 28 - 11. What is polygenic inheritance? Discuss the...Ch. 28 - What is a quantitative trait locus (QTL)? Does a...Ch. 28 - 13. Let’s suppose that weight in a species of...Ch. 28 - Prob. 14CONQCh. 28 - 15. From an agricultural point of view, discuss...Ch. 28 - Many beautiful varieties of roses have been...Ch. 28 - 17. In your own words, explain the meaning of the...Ch. 28 - 18. What is the difference between broad-sense...Ch. 28 - The heritability for egg weight in a group of...Ch. 28 - In a fairly large population of people living in a...Ch. 28 - When artificial selection is practiced over many...Ch. 28 - 22. Discuss whether a natural population of wolves...Ch. 28 - 23. With regard to heterosis, is each of...Ch. 28 - Here are data for height and weight among 10 male...Ch. 28 - 2. The abdomen length (in millimeters) was...Ch. 28 - 3. You conduct an RFLP analysis of head weight in...Ch. 28 - 5. Let’s suppose that two strains of pigs differ...Ch. 28 - Prob. 6EQCh. 28 - In a wild strain of tomato plants, the phenotypic...Ch. 28 - The average thorax length in aDrosophilapopulation...Ch. 28 - 9. In a strain of mice, the average 6-week body...Ch. 28 - Prob. 10EQCh. 28 - 11. A danger in computing heritability values from...Ch. 28 - For each of the following relationships,...Ch. 28 - An animal breeder had a herd of sheep with a mean...Ch. 28 - The trait of blood pressure in humans has a...Ch. 28 - Discuss why heritability is an important...Ch. 28 - From a biological viewpoint, speculate as to why...Ch. 28 - 3. What is heterosis? Discuss whether it is caused...
Knowledge Booster
Learn more about
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 calculating heritability in finch beak size using parent/offspring data, we find that 70 percent of the variation in the trait is due to genetics. What might explain the remainder of the variation? Select all that apply. A. nutrition B. color C. precipitation D. stress E. rarity F. temperaturearrow_forward18 16 14 12 10 8 10 6 A . 5 30 •8 25 a 20 18 16 14 12 10 8 6 4 2 0 50 36 34 12 20 8 6 4 2 0 B D . ● 30 10 10 • • 15 20 Mid parent values 3. Consider the above graphs showing the midparent values against the midoffspring values. What would you expect to happen to the mean phenotype value of the population, if only the parents with the highest trait values were allowed to breed (orange dots)? Use terms like 'strong increase', 'weak increase', 'no change'. Explain your answer. 4. Why is sexual selection a form of natural selection? Do natural selection and sexual selection always act in the same way? 5. What is an evolutionary constraint? How does their occurrence help answer the question whether all traits are adaptive? 6. Read the article by Gould and Lewontin: 'The Spandrels of San Marco and the Panglossian Paradigm'. a. What is the most important criticism the authors put forward? b. Can you think of an example of 'adaptationism', and why that may or may not be correct? If you'd like,…arrow_forwardE13. An animal breeder had a herd of sheep with a mean weight of 254pounds at 3 years of age. He chose animals with a mean weight of281 pounds as parents for the next generation. When these offspringreached 3 years of age, their mean weight was 269 pounds.A. Calculate the narrow-sense heritability for weight in this herd.B. Using the heritability value that you calculated in part A, whatmean weight would you have to choose for the parents to getoffspring that weigh 275 pounds on average (at 3 years of age)?arrow_forward
- Give only typing answer with explanation and conclusion A quantitative trait with mean 5 and std 0.24. You calculate VG = 0. Explain what VG = 0 means in terms of heritability. How does this trait have phenotypic variation if VG = 0?arrow_forwardMonozygotic twin studies have allowed the correlation coefficient to be derived for a number of medical conditions. One example is blood pressure, where the coefficient is 0.6. Calculate the maximum value for the narrow sense heritability for blood pressure. B. 0.30 С. 0.50 D. 0.60 Е. 1.00arrow_forwardThe variance for weight in a particular herd of cattle is 484 pounds2.The mean weight is 562 pounds. How heavy would an animal haveto be if it was in the top 2.5% of the herd? The bottom 0.13%?arrow_forward
- A gardener grows two different colors of apples under exactly the same environmental conditions. Red apples have a heritability of 0.14 for the value of apple weight, and green apples have a heritability of 0.41 for the value of apple weight. The gardener plotted the number of apples present at each weight. Which graph would you hypothesize represents the red apples? Number of apples Weight GRAPH A Number of apples Weight GRAPH B O Graph A O Graph B There is not enough information to make a hypothesis.arrow_forwardIn a recently published case control study, the researcher reported an odds ratio of 3.55 (95% CI 1.88-5.4). This indicates that the OR is significant and the associated p=value is less than 0.05. A. TrueB. False please explain the reasoning behind the answer, thank you!arrow_forwardAn animal breeder had a herd of sheep with a mean weight of254 pounds at 3 years of age. He chose animals with a meanweight of 281 pounds as parents for the next generation. Whenthese offspring reached 3 years of age, their mean weight was269 pounds.A. Calculate the narrow-sense heritability for weight in this herd.B. Using the heritability value that you calculated in part A, whatmean weight would you have to choose for the parents to getoffspring that weigh 275 pounds on average (at 3 years of age)?arrow_forward
- Farmer John decides to increase the weight of the eggs produced by his chickens. The average weight of his eggs is 50 grams. He knows that the heritability of egg weight is 0.5. He selects for chickens producing eggs that are 64 grams. The expected average weight of the resulting eggs is: 59 57 54 55 56arrow_forwardOnce upon a time there was a population of hippies living in an isolated commune called Gone. They had been there for generations, and all members were homozygous for a gene that gave them a preference for crafting necklaces out of green beads, so that every individual had the genotype GG at this locus. In another isolated commune, called Yonder, was a population of hippies that had a genetic propensity for making necklaces out of yellow beads, and everyone was homozygous for a different allele at the same genetic locus; their genotype was YY. Last year (prior to our current social isolating) everyone repaired their VW buses, and a giant gathering in celebration of the 50th anniversary was held at the Oregon Country Fair. The next few questions will ask you about these two populations that came together at the fair.arrow_forwardElephant seals are a sexually dimorphic species of marine mammal that lives off the coast of California. The females, which weigh around 1000 lbs, are much smaller than the males, which may weigh up to 5000 Ibs. Suppose that scientists measured the weight of three adult female elephant seals and their female offspring. Parent Weight Offspring Weight 920 742 999 780 1014 787 Calculate the narrow sense heritability, h', of weight for female elephant seals to two decimal places. What conclusions can be drawn from these data?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
How to solve genetics probability problems; Author: Shomu's Biology;https://www.youtube.com/watch?v=R0yjfb1ooUs;License: Standard YouTube License, CC-BY
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