Concepts of Genetics (11th Edition)
Concepts of Genetics (11th Edition)
11th Edition
ISBN: 9780321948915
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino
Publisher: PEARSON
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Chapter 23, Problem 12PDQ

The following variances were calculated for two traits in a herd of hogs.

Chapter 23, Problem 12PDQ, The following variances were calculated for two traits in a herd of hogs. (a) Calculate broad-sense

  1. (a) Calculate broad-sense (H2) and narrow-sense (h2) heritabilities for each trait in this herd.
  2. (b) Which of the two traits will respond best to selection by a breeder? Why?
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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?
In a cross between two inbred lines of Drosophila, the F1 progeny has the phenotypic variance of 0.87 for the number of abdominal bristles. The F2 generation has the phenotypic variance of 3. a)What is the environmental variance?        __________ b)What is the genetic variance of the F2?    __________   In a plant, height varies between 6 and 36 cm and is governs by 3 genes with wild-type alleles being additive. What would be the genotype of a plant16 cm in height? there might be multiple possible answers   Name one mutation which is a suppressor of bri1-5
In a population of 100 inbred, genotypically identical rice plants, variance for grain yield is 4.67. What is the heritability for yield? Would you advise a rice breeder to improve yield in this strain of rice plants by selection?

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Concepts of Genetics (11th Edition)

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