Scenario 1 Genotype Relative Fitness: __rr__0_______Rr___0.8_____RR___1_____ Generation 0 (start) 50 100 150 200 250 Population Size 198 200 202 200 198 205 Proportion R allele 0.47 0.88 0.98 1 1 1 Proportion r allele 0.53 0.12 0.02 0 0 0 Proportion rr Genotype 0.28 0 0 0 0 0 Proportion Rr Genotype 0.5 0.23 0.05 0 0 0 Proportion RR Genotype 0.22 0.77 0.95 1 1 1 Scenario 3 Genotype Relative Fitness: __rr__0.5_______Rr__0.6______RR__0.7______ Generation 0 (start) 50 100 150 200 250 Population Size 97 176 198 170 187 199 Proportion R allele 0.46 0.65 0.87 0.92 1 1 Proportion r allele 0.54 0.35 0.13 0.08 0 0 Proportion rr Genotype 0.31 0.12 0.02 0 0 0 Proportion Rr Genotype 0.45 0.46 0.22 0.15 0 0 Proportion RR Genotype 0.24 0.42 0.76 0.85 0.99 1 Scenario 3 Genotype Relative Fitness: __rr_0________Rr__0.5______RR__0______ Generation 0 (start) 50 100 150 200 250 Population Size 100 30 17 1 0 0 Proportion R allele 0.51 0.48 0.44 0.56 0.56 0.56 Proportion r allele 0.49 0.52 0.56 0.44 0.44 0.44 Proportion rr Genotype 0.26 0.1 0.24 0.18 0.18 0.18 Proportion Rr Genotype 0.48 0.87 0.65 1 1 1 Proportion RR Genotype 0.27 0.03 0.12 0.06 0.06 0.06 What is happening to the alleles and genotypes over generations for each scenario in this set of virtual experiments? Based on what you know about natural selection, explain the results? Write a few sentences for each scenario.
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
Scenario 1 Genotype Relative Fitness: __rr__0_______Rr___0.8_____RR___1_____
|
Generation |
0 (start) |
50 |
100 |
150 |
200 |
250 |
|
|
198 |
200 |
202 |
200 |
198 |
205 |
|
Proportion R allele |
0.47 |
0.88 |
0.98 |
1 |
1 |
1 |
|
Proportion r allele |
0.53 |
0.12 |
0.02 |
0 |
0 |
0 |
|
Proportion rr Genotype |
0.28 |
0 |
0 |
0 |
0 |
0 |
|
Proportion Rr Genotype |
0.5 |
0.23 |
0.05 |
0 |
0 |
0 |
|
Proportion RR Genotype |
0.22 |
0.77 |
0.95 |
1 |
1 |
1 |
Scenario 3 Genotype Relative Fitness: __rr__0.5_______Rr__0.6______RR__0.7______
|
Generation |
0 (start) |
50 |
100 |
150 |
200 |
250 |
|
Population Size |
97 |
176 |
198 |
170 |
187 |
199 |
|
Proportion R allele |
0.46 |
0.65 |
0.87 |
0.92 |
1 |
1 |
|
Proportion r allele |
0.54 |
0.35 |
0.13 |
0.08 |
0 |
0 |
|
Proportion rr Genotype |
0.31 |
0.12 |
0.02 |
0 |
0 |
0 |
|
Proportion Rr Genotype |
0.45 |
0.46 |
0.22 |
0.15 |
0 |
0 |
|
Proportion RR Genotype |
0.24 |
0.42 |
0.76 |
0.85 |
0.99 |
1 |
Scenario 3 Genotype Relative Fitness: __rr_0________Rr__0.5______RR__0______
|
Generation |
0 (start) |
50 |
100 |
150 |
200 |
250 |
|
Population Size |
100 |
30 |
17 |
1 |
0 |
0 |
|
Proportion R allele |
0.51 |
0.48 |
0.44 |
0.56 |
0.56 |
0.56 |
|
Proportion r allele |
0.49 |
0.52 |
0.56 |
0.44 |
0.44 |
0.44 |
|
Proportion rr Genotype |
0.26 |
0.1 |
0.24 |
0.18 |
0.18 |
0.18 |
|
Proportion Rr Genotype |
0.48 |
0.87 |
0.65 |
1 |
1 |
1 |
|
Proportion RR Genotype |
0.27 |
0.03 |
0.12 |
0.06 |
0.06 |
0.06 |
What is happening to the alleles and genotypes over generations for each scenario in this set of virtual experiments? Based on what you know about natural selection, explain the results? Write a few sentences for each scenario.
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