Gene Linkage, Crossing Over, and Mapping Genotype of Diploids Phenotype Crossover Type Frequency 1. Normal V G1 Va v gi va Parental 235 2. Virescent, Glossy, Variable sterile Parental v gi va v gi va 270 3. Glossy, Variable sterile V gi va v gi va Single Crossover Region I 60 v G1 Va v gi va 4. Virescent Single Crossover Region I 62 5. Variable sterile V G1 va v gi va Single Crossover Region II 40 V gi Va v gi va 6. Virescent, Glossy Single Crossover Region II 48 7. Glossy V gi Va v gi va Double Crossover 7 8. Virescent, Variable sterile ? Double Crossover 4 726

Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter13: Observing Patterns In Inherited Traits
Section: Chapter Questions
Problem 11GP: A single allele gives rise to the Hbs form of hemoglobin. Individuals who are homozygous for the...
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Gene Linkage, Crossing Over, and Mapping
Phenotype
Genotype of Crossover Type Frequency
Diploids
1. Normal
V G1 Va
v gi va
Parental
235
2. Virescent, Glossy,
Variable sterile
v gi va
v gi va
Parental
270
3. Glossy, Variable sterile
V gi va
v gi va
Single Crossover
Region I
60
v G1 Va
v gi va
4. Virescent
Single Crossover
Region I
62
5. Variable sterile
V G1 va
v gi va
Single Crossover
Region II
40
V gi Va
v gi va
6. Virescent, Glossy
Single Crossover
Region II
48
7. Glossy
V gi Va
v gi va
Double Crossover
7
8. Virescent,
Variable sterile
Double Crossover
726
Refer to the tabulated details to accomplish the following.
1. State the genotype of # 8.
2. Identify the correct sequence of genes prior to crossover.
3. Calculate the LV or RF of Region I and II. (1 decimal place)
4. Map the genes expressing relative distances in cM. (1 decimal place)
5. Determine the CỐC. (Initial calculation: 3 dec places each for Reg I& II)
Express final answer for COC in 2 decimal places.
6. Calculate the Interference. (2 decimal places for the final answer)
7. Conclusion (State the association: gene linkage, COC, and Interference)
Transcribed Image Text:Gene Linkage, Crossing Over, and Mapping Phenotype Genotype of Crossover Type Frequency Diploids 1. Normal V G1 Va v gi va Parental 235 2. Virescent, Glossy, Variable sterile v gi va v gi va Parental 270 3. Glossy, Variable sterile V gi va v gi va Single Crossover Region I 60 v G1 Va v gi va 4. Virescent Single Crossover Region I 62 5. Variable sterile V G1 va v gi va Single Crossover Region II 40 V gi Va v gi va 6. Virescent, Glossy Single Crossover Region II 48 7. Glossy V gi Va v gi va Double Crossover 7 8. Virescent, Variable sterile Double Crossover 726 Refer to the tabulated details to accomplish the following. 1. State the genotype of # 8. 2. Identify the correct sequence of genes prior to crossover. 3. Calculate the LV or RF of Region I and II. (1 decimal place) 4. Map the genes expressing relative distances in cM. (1 decimal place) 5. Determine the CỐC. (Initial calculation: 3 dec places each for Reg I& II) Express final answer for COC in 2 decimal places. 6. Calculate the Interference. (2 decimal places for the final answer) 7. Conclusion (State the association: gene linkage, COC, and Interference)
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