Many traits are affected by theenvironment, but also have a genetic component. How can wepartition the sources of variation? Write a formula for this. Ifyou want to measure the sources of variation, how can this be doneexperimentally? Write out howyou can do this making specific reference to yourformula.
Heritability can be defined in two ways.What are these definitions and how are they different?
Not all genetic variation is the same. Whatis the difference between additive, dominance, and epistatic formsof genetic variation? Define all three, and update your formula. Inaddition, use a regression plot to schematize additive anddominance variation (ie, box 9.2).
Differential survival and reproduction canbe measured empirically, as can quantitative phenotypes of nearlyany organism. From these we can calculate selection differentialsand selection gradients. What are selection differentials andgradients?
Selection can act on quantitative traits ina variety of ways. Draw a diagram of what directional, stabilizing,and disruptive selection would look like on the distribution of atrait, then describe and explain the differences. Write concisedefinitions next to each type of selection.
If two populations differ in a trait thathas a high heritability, is it valid to conclude that the twopopulations differ genetically with respect to that trait? Useevidence from section 9.7 to explain why or why not.
Many traits are affected by theenvironment, but also have a genetic component. How can wepartition the sources of variation? Write a formula for this. Ifyou want to measure the sources of variation, how can this be doneexperimentally? Write out howyou can do this making specific reference to yourformula.
Heritability can be defined in two ways.What are these definitions and how are they different?
Not all genetic variation is the same. Whatis the difference between additive, dominance, and epistatic formsof genetic variation? Define all three, and update your formula. Inaddition, use a regression plot to schematize additive anddominance variation (ie, box 9.2).
Differential survival and reproduction canbe measured empirically, as can quantitative phenotypes of nearlyany organism. From these we can calculate selection differentialsand selection gradients. What are selection differentials andgradients?
Selection can act on quantitative traits ina variety of ways. Draw a diagram of what directional, stabilizing,and disruptive selection would look like on the distribution of atrait, then describe and explain the differences. Write concisedefinitions next to each type of selection.
If two populations differ in a trait thathas a high heritability, is it valid to conclude that the twopopulations differ genetically with respect to that trait? Useevidence from section 9.7 to explain why or why not.
