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
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 21, Problem 12PDQ
The following variances were calculated for two traits in a herd of hogs.
| Trait | VP | VG | VA |
| Back fat | 30.6 | 12.2 | 8.44 |
| Body length | 52.4 | 26.4 | 11.70 |
(a) Calculate broad-sense (H2) and narrow-sense (h2) heritabilities for each trait in this herd.
(b) Which of the two traits will respond best to selection by a breeder? Why?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1) The following variances were calculated for two traits in a herd of hogs.
Trait
Vp
VG
VA
Back fat
30.6
12.2
8.44
Body length
52.4
26.4
11.70
Calculate the broad sense heritability (H?) and narrow sense heritability's (h2) for each train in this herd.
Which of the two traits will respond best to the selection by a breeder? Why?
2) The following variances were calculated for two traits in poodles.
Trait
VA
Vp
VG
Tail length
6.3
20.1
8
Body length
11.7
33.4
16.2
Calculate broad sense (H?) and narrow sense (h?) heritability for each trait in this herd.
The following variances were calculated for two traits in poodles.
Vp
VG
20.1
8
Trait
Tail length
Body
length
VA
6.3
11.7
33.4
16.2
Calculate broad sense (H²) and narrow sense (h²) heritability for each trait
in this herd.
Chapter 21 Solutions
Essentials of Genetics (9th Edition) - Standalone book
Ch. 21 -
CASE STUDY | A genetic flip of the coin
On July...Ch. 21 - CASE STUDY|A genetic flip of the coin On July 11,...Ch. 21 -
CASE STUDY|A genetic flip of the coin
On July...Ch. 21 - HOW DO WE KNOW?
1. In this chapter, we focused on...Ch. 21 - Review the Chapter Concepts list on page 422....Ch. 21 -
3. Define the following: (a) polygenic, (b)...Ch. 21 - A dark-red strain and a white strain of wheat are...Ch. 21 - Height in humans depends on the additive action of...Ch. 21 -
6. An inbred strain of plants has a mean height...Ch. 21 - Prob. 7PDQ
Ch. 21 - In the following table, average differences of...Ch. 21 - What kind of heritability estimates (broad sense...Ch. 21 - List as many human traits as you can that are...Ch. 21 - Corn plants from a test plot are measured, and the...Ch. 21 -
12. The following variances were calculated for...Ch. 21 - The mean and variance of plant height of two...Ch. 21 - A hypothetical study investigated the vitamin A...Ch. 21 - In a herd of dairy cows the narrow-sense...Ch. 21 - In an assessment of learning in Drosophila, flies...Ch. 21 - Suppose you want to develop a population of...Ch. 21 -
18. In a population of tomato plants, mean fruit...Ch. 21 - In a population of 100 inbred, genotypically...Ch. 21 - In a cross between a strain of large guinea pigs...Ch. 21 - While most quantitative traits display continuous...
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
- The following variances were calculated for two traits in a herdof hogs.Trait VP VG VABack fat 30.6 12.2 8.44Body length 52.4 26.4 11.70 Calculate broad-sense (H2) and narrow-sense (h2) heritabilitiesfor each trait in this herd.arrow_forwardThe mean and variance of plant height of two highly inbred strains (P1 and P2) and their progeny (F1 and F2) are shown here. Strain Mean (cm) Variance P1 34.2 4.2 P2 55.3 3.8 F1 44.2 5.6 F2 46.3 10.3 Calculate the broad-sense heritability (H2) of plant height in this species.arrow_forwardTail length in a population of peacocks has a phenotypic variance of 2.56cm^2 and an enviromental variance of 1.14cm^2. What is the broad sense heritability (H2)?arrow_forward
- In a horse population, three different traits showing continuous distribution were measured,and their variances are shown in the table below:(see image) 1. Calculate the broad sense and narrow sense heritabilities for each trait.2. In the population of animals studied, which trait would respond best to selection for breeding purposes? Explain your answer.arrow_forwardPhenotypic variation in the tail length of mice has the following components: Additive genetic variance (VA) Dominance genetic variance (VD) Gene interaction variance (VI) Environmental variance (VE) Genetic–environmental interaction variance (VGE) a. What is the narrow-sense heritability of tail length? b. What is the broad-sense heritability of tail length?arrow_forwardVariance in back fat & body length were calculated in a heard of hogs and summarized in the table below. Trait In hogs Back fat Body length Vp 24.5 48.2 VG 15.5 28.4 VA 7.0 12.6 Calculate the narrow-sense heritability for body length, and provide an answer with 2 places behind the decimal. [h²] (Enter an answer with 2 or 3 significant figures)arrow_forward
- A hypothetical study investigated the vitamin A content and thecholesterol content of eggs from a large population of chickens.The variances (V) were calculated, as shown at the top of the nextcolumn: Variance Vitamin A CholesterolVP 123.5 862.0VE 96.2 484.6VA 12.0 192.1VD 15.3 185.3 Calculate the narrow-sense heritability (h2) for bothtraits.arrow_forwardOne variety of pigs reach maturity at 81 days with a variance of 6.4 days2 while a second variety takes 93 days to reach maturity with a variance of 6.6 days. An F2 population derived from these populations takes 87 days to reach maturity and has a variance of 8.5 days. What is the broad-sense heritability for this trait?arrow_forwardSuppose that in a population of Peacocks the phenotypic variance for tail length is 2.5 and the heritability for this trait is 0.4. From a long-term captive population you also have data from a line of completely inbred individuals. In this line the phenotypic variance among individuals is 0.50. Assume that there is no epistatic variance (VI) for this trait. Calculate the following: What is the additive genetic variance? What is the dominance genetic variance? What is the environmental variance? What is the broad-sense heritability (H2)?arrow_forward
- Suppose that in a population of Peacocks the phenotypic variance for tail length is 2.5 and the heritability for this trait is 0.4. From a long-term captive population you also have data from a line of completely inbred individuals. In this line the phenotypic variance among individuals is 0.50. Assume that there is no epistatic variance (VI) for this trait. Calculate the following: What is the total genetic variance for tail length? What is the additive genetic variance? What is the dominance genetic variance? What is the environmental variance? What is the broad-sense heritability (H2)?arrow_forward1) Narrow sense heritability of withers height in a population of quarter horses is 17%. The average withers height in this population is 17.5 hands (1 hand is equal to 4 inches). From this population, studs and mares with average withers height of 19.8 hands are selected as parents for the next generation. 1a) Calculate the selection differential and expected response to selection for withers height in this population. 1b) What should be the average withers height in the progeny of the selected animals?arrow_forwardTwo inbred lines of rice are intercrossed. In the F1, the variance in panicle weight is measured to be 12 g2. The F1 is selfed, and in the F2, the variance in panicle weight is 38 g2. Estimate the broad sense heritability of panicle weight in the F2 population of this experiment. If there is no genetic variation within a population for a given trait, what is the broad sense heritability value for the trait in the population?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
Genetic Variation and Mutation | 9-1 GCSE Science Biology | OCR, AQA, Edexcel; Author: SnapRevise;https://www.youtube.com/watch?v=bLP8udGGfHU;License: Standard YouTube License, CC-BY