(a) Alleles in coupling configuration (b) Alleles in repulsion configuration Green thorax, Purple thorax, black puparium Green thorax, brown puparium Purple thorax, black puparium brown puparium Testcross Testcross b+ p b p b+ Gamete formation Gamete formation Gamete formation Gamete formation p* b p* b p* b* p b Nonrecombinant Recombinant Nonrecombinant Recombinant gametes gametes gametes gametes Fertilization Fertilization Green thorax, Purple thorax, Green thorax, Purple thorax, brown puparium Green thorax, Purple thorax, Green thorax, Purple thorax, black brown black black brown brown black puparium puparium puparium puparium puparium puparium puparium p* b+ b b p b+ b b+ b+ b. p b Progeny number Progeny number 40 40 10 10 40 40 10 10 Nonrecombinant Recombinant Nonrecombinant Recombinant progeny progeny progeny progeny Conclusion: The phenotypes of the offspring are the same, but their numbers differ, depending on whether alleles are in coupling or in repulsion. Pierce, Genetics: A Conceptual Approach, 7e © 2020 W. H. Freeman and Company

(a) Alleles in coupling configuration (b) Alleles in repulsion configuration Green thorax, Purple thorax, black puparium Green thorax, brown puparium Purple thorax, black puparium brown puparium Testcross Testcross b+ p b p b+ Gamete formation Gamete formation Gamete formation Gamete formation p* b p* b p* b* p b Nonrecombinant Recombinant Nonrecombinant Recombinant gametes gametes gametes gametes Fertilization Fertilization Green thorax, Purple thorax, Green thorax, Purple thorax, brown puparium Green thorax, Purple thorax, Green thorax, Purple thorax, black brown black black brown brown black puparium puparium puparium puparium puparium puparium puparium p* b+ b b p b+ b b+ b+ b. p b Progeny number Progeny number 40 40 10 10 40 40 10 10 Nonrecombinant Recombinant Nonrecombinant Recombinant progeny progeny progeny progeny Conclusion: The phenotypes of the offspring are the same, but their numbers differ, depending on whether alleles are in coupling or in repulsion. Pierce, Genetics: A Conceptual Approach, 7e © 2020 W. H. Freeman and Company

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter13: Modern Understandings Of Inheritance

Section: Chapter Questions

Problem 2VCQ: Figure 13.4 Which of the following statements is true? Recombination of the body color and red/...

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