Factors influencing variation

At the end of this activity, students should be able to:
– name the main factors influencing variation of traits
– differentiate between inherited variation and non-inherited variation
– explain the relationship between phenotypic traits, genotype (the genetic record of traits) and the modifying effects of environmental factors
– explain the biological significance of variation
– explain the reasons for the vast range of possible combinations of traits and the uniqueness of an individual's traits.