1.How does a quantitative characteristic differ from a discontinuous characteristic?

2.Briefly explain why the relation between genotype and phenotype is frequently complex for quantitative characteristics.

3.Why do polygenic characteristics have many phenotypes?

4.What information do the mean and variance provide about a distribution?

5.List all the components that contribute to the phenotypic variance and define each component.

6.How do the broad-sense and narrow-sense heritabilities differ?

7.Briefly describe common misunderstandings or misapplications of the concept of heritability.

8.Briefly explain how genes affecting a polygenic characteristic are located with the use of QTL mapping.

9.How is the response to selection related to narrow-sense heritability and the selection differential? What information does the response to selection provide?

10.Why does the response to selection often level off after many generations of selection?