What does the selection coefficient measure? Does a large value indicate a small or large fitness difference?
What does the selection coefficient measure? Does a large value indicate a small or large fitness difference?
Ans.In population genetics the selection coefficient is measure of the relative fitness of a phenotype.it is denoted by the word 'S' it compares the fitness of a phenotype to another favored phenotype, and is the proportional amount that the considered phenotype is less fit as measured by fertile progeny.
During heavy work,muscles need more blood flow,which reduces the amount of blood flow to the skin and release the heat..
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What does the selection coefficient measure? Does a large value indicate a small or large fitness...
Why does the fitness of a phenotype depend on frequency-dependent selection? A. Because selection favors the least common phenotype. B. Because the least number of alleles are at that locus. C. Because sexual selection produces dimorphism. OD. Because frequency-dependent selection acts against extreme phenotypes.
In stabalizing selection : 1. How is the relative fitness of genotypes affected when selection is acting against homozygotes? 2. What effect does it have on the mean phenotype and genotypic/phenotypic variation within a population? In disruptive selection 1. How is the relative fitness of genotypes affected when selection is acting against heterozygotes? 2. What effect does it have on the mean phenotype and genotypic/phenotypic variation within a population? How does selection typically affect genotypic/phenotypic variation between populations? How do...
Selection for insecticide resistance is very strong, Curtis et al. estimated the relative fitness in the mosquito, Anopheles culicifacies, an important vector for malaria in Asia. They estimated the finesses of the three genotypes, SS, SR and RR (S is susceptible, and R is resistant) under exposure to the insecticide DDT based on the assumption that resistance is dominant. 12pts Relative Fitness: Species Insecticide SS SR RR Anopheles culicifacies with DDT 0.35 1.0 1.0 without DDT 1.0 0.83 0.65...
These have to do with the Avida-ED simulation: 1. How does Avida-ED measure fitness? 2. Based on what you observed in the Population Statistics and the Organism Type boxes during the run, what do you think accounts for changes in individual fitness and changes in the average fitness in the population? 3. When do you think mutations arise that can confer a selective advantage relative to the presence of a selective agent?
1. What does the trade-to-GDP ratio measure? Does a low value indicate that a country is closed to trade with the outside world? 2. Describe the pattern over the last century shown by the trade-to-GDP ratio for leading industrial economies. 3. In relative terms, international capital flows may not be much greater today than they were a hundred years ago, although they are certainly greater than they were fifty years ago. Qualitatively, however, capital flows are different today....
(Hardy weinberg equation) You are examining a population that is under selection where the fitness of the heterozygotes is 0.34, homozygotes is 1. If there's 546 AA, 127 aa, and 982 Aa individuals in population, what will be the "p" value for the next generation?
1. Of what is FST a measure? What are some problems with this measurement? Fixation index (Fst) is an measure of genetic differences among subpopulations. Measures how genetically similar two populations are to each other. (is this correct) Some problems with this measurement ???? 2. What is sexual selection? What is natural selection? Define relative fitness Sexual selection - selecting a mating partner from the opposite sex based on certain traits and competion of the same sex for finding a...
Use the value of the linear correlation coefficient to calculate the coefficient of determination. What does this tell you about the explained variation of the data about the regression line? About the unexplained variation? r=-0.587
Use the value of the linear correlation coefficient to calculate the coefficient of determination. What does this tell you about the explained variation of the data about the regression line? About the unexplained variation? requals=0.839
Use the value of the linear correlation coefficient to calculate the coefficient of determination. What does this tell you about the explained variation of the data about the regression line? About the unexplained variation? requals=0.2910.291 Calculate the coefficient of determination. nothing (Round to three decimal places as needed.)