Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
12th Edition
ISBN: 9780134811390
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 25, Problem 15PDQ
Summary Introduction
To determine: The effect on milk protein content in the next generation when the farmer selects cows producing more butterfat in their milk in the given problem.
Introduction: The contribution of genotypic variance to the total
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Students have asked these similar questions
A population of farmed salmon average 9 pounds in weight at two years old. To
select for rapid weight gain, fish with an average two-year weight of 12 pounds are
selected for breeding. If the narrow-sense heritability (h²) for two-year weight in the
unselected population is 0.2, what will be the average two-year weight of the
offspring of the selected fish?
9.2 pounds
9.6 pounds
10.8 pounds
12.2 pounds
12.3 pounds
If I'm given this information and I am told that the average estimated heritability was determined to be 0.13 and 0.28 for weaning weight and hip height. How do I use the information in the table to determine statistically whether weaning weight and stature have improved?
Please help
Chapter 25 Solutions
Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
Ch. 25 - A homozygous plant with 20-cm-diameter flowers is...Ch. 25 - The following table shows measurements for fiber...Ch. 25 - The following cable gives the percentage of twin...Ch. 25 - At an interview with a genetic counselor, a couple...Ch. 25 - Prob. 2CSCh. 25 - At an interview with a genetic counselor, a couple...Ch. 25 - HOW DO WE KNOW? In this chapter, we focused on a...Ch. 25 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 25 - Define the following: (a) polygenic, (b) additive...Ch. 25 - A dark-red strain and a white strain of wheat are...
Ch. 25 - Height in humans depends on the additive action of...Ch. 25 - An inbred strain of plants has a mean height of 24...Ch. 25 - Erma and Harvey were a compatible barnyard pair,...Ch. 25 - In the following table, average differences of...Ch. 25 - What kind of heritability estimates (broad sense...Ch. 25 - List as many human traits as you can that are...Ch. 25 - Corn plants from a test plot are measured, and the...Ch. 25 - The following variances were calculated for two...Ch. 25 - The mean and variance of plant height of two...Ch. 25 - Prob. 14PDQCh. 25 - Prob. 15PDQCh. 25 - In an assessment of learning in Drosophila, flies...Ch. 25 - Prob. 17PDQCh. 25 - Prob. 18PDQCh. 25 - In a population of 100 inbred, genotypically...Ch. 25 - Many traits of economic or medical significance...Ch. 25 - A 3-inch plant was crossed with a 15-inch plant,...Ch. 25 - In a cross between a strain of large guinea pigs...Ch. 25 - Type A1B brachydactyly (short middle phalanges) is...Ch. 25 - In a series of crosses between two true-breeding...Ch. 25 - Students in a genetics laboratory began an...Ch. 25 - Prob. 26ESPCh. 25 - Canine hip dysplasia is a quantitative trait that...Ch. 25 - Floral traits in plants often play key roles in...Ch. 25 - In 1988, Horst Wilkens investigated blind...
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- Three characteristics in beef cattle—body weight, fat content, and tenderness—are measured, and the following variance components are estimated: Body weight Fat content Tenderness VA 22 45 12 VD 10 25 5 VI 3 8 2 VE 42 64 8 VGE 0 0 1 In this population, which characteristic would respond best to selection? Explain your reasoning.arrow_forwardThe narrow-sense heritability of growth rate in swine is 0.4. The mean of the population is 100 kg. A male and a female measuring 115 and 125 kg, respectively, mate and produce a number of offspring, which are reared in an average environment. What is the expected value of the trait among these offspring?arrow_forwardWhat are the mean, variance, and standard deviationfor each trait in this flock?arrow_forward
- The 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_forwardThe two question below are confusingarrow_forwardThe broad-sense heritability of a trait is estimated at 0.6. If the total phenotypic variance is estimated at 30.0, what is the genetic variance? 12 18 36 5 9arrow_forward
- In a population of geese, the narrow-sense heritability for wing span is shown to be 0.5. If the phenotypic variance is 0.8, the gene-environment interaction variance is 1.2, and the environmental variance is 0.2, what is the additive genetic variance?arrow_forwardYou have been breeding roaches in your dorm and are trying to increase the speed in your roach population. You measure speed by timing how quickly the roaches race along the linear track in your dorm room. Your current population mean is 9.3 seconds with a standard deviation of 0.32 sec. You selected the fastest 10% of your current population to be parents of the next generation. The broad and narrow sense heritability values for racing speed in roaches are 0.93 and 0.78, respectively. You wish to develop a faster population of roaches. Round all answers properly to three decimal digits. Enter all answers without units so that they will be correctly recognized by Moodle. The numerical value for the standardized selection point is The numerical value for the truncation point is seconds. The numerical value for the selection intensity is Calculate the selection differential. S = seconds. The mean of the selected parents is seconds. The response to selection is seconds. The mean of the…arrow_forwardFarmer 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_forward
- Please refer to the table below. If only data on the variances for F1, F2 and BC1 populations were available, how will the broad sense heritability estimate change? Show solutions.arrow_forwardIn a horse population, three different traits showing continuous distribution were measures, and their variances are shown in the table below: Calculate the broad sense and narrow sense heritabilities for each trait.arrow_forwardThe length of the middle joint of the right index finger was measured in 10 sets of parents and their adult offspring. The mean parental lengths and the mean offspring lengths for each family are listed in the accompanying table. Calculate the regression coefficient for regression of mean offspring length against mean parental length and estimate the narrow-sense heritability for this characteristic. Mean parental length (mm) Mean offspring length (mm) 30 31 35 36 28 31 33 35 26 27 32 30 31 34 29 28 40 38 33 34arrow_forward
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