Suppose you are studying a trait due to three genes that all additively affect the same trait. The genes are A, B, and C. Capital letters symbolize the "phenotype-adding" allele and lower case letters symbolize the "non-adding" allele. (In other words, the behavior of the genes is like those affecting wheat kernel color in the Nilsson-Ehle experiment presented in class). If AaBbCc is testcrossed to aabbcc, how many different phenotypes will be produced in the progeny?
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.
1. Suppose you are studying a trait due to three genes that all additively affect the same trait. The genes are A, B, and C. Capital letters symbolize the "phenotype-adding" allele and lower case letters symbolize the "non-adding" allele. (In other words, the behavior of the genes is like those affecting wheat kernel color in the Nilsson-Ehle experiment presented in class). If AaBbCc is testcrossed to aabbcc, how many different
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