You are a biologist studying the local butterfly population. You've discovered 4 white (albino) butterflies. You mated each one with a wildtype butterfly and kept the lines separately. After several generations of back crosses, you've managed to create 4 lines of white butterflies. How can you tell if they represent mutations in the same gene or different genes? What crosses would you do? What results would you expect? (using complementation analysis).
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.
You are a biologist studying the local butterfly population. You've discovered 4 white (albino) butterflies. You mated each one with a wildtype butterfly and kept the lines separately. After several generations of back crosses, you've managed to create 4 lines of white butterflies. How can you tell if they represent mutations in the same gene or different genes? What crosses would you do? What results would you expect? (using complementation analysis).
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