Inheritance showing continuous variation
Examples - height, weight, skin colout
Phenotypes quantifies by measurement
Two or more genes each with two alleles that are either additive or neutral
Effect of each individual allele small but together a large significant effect on phenotype
Analysis of polygenic inheritance requires very large progeny
Dihybrid polygenic inheritance example - kernal colour in wheat
Trihybrid polygenic inheritance example - human skin pigmentation
Many gene inheritance - corolla length in tobacco
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