hagan

Hi, need some help, this is driving me crazy, this is not an assignment just review question that i cant get my head around, just need to be pointed in the right directions Two doubled-haploid (homozygous) lines of canola differ in leaflength. In one, the average leaf lengthis 30 cm, and in the other it is 15 cm. In both lines, the variance in leaf length is 2 cm2 whengrown in similar environments. In the F2generation of a cross between these lines, the average leaf length is 22.5 cm,with a variance of 5 cm2. (Hint: DO NOT ASSUME THAT THE ENVIRONMENTAL VARIANCE =0) a. What is the genotypicvariance? so from the lecture notes, it doesnt cover much but what i can work out Vp = VG+VE+VGE find VG = VP - VE and if genetic uniform population then phenotypic variance of F1 = VE and Phenotypic variance of F2 provides and estimate of = VGE VG = VGE - VE F2 = 5cm2 but we don't have F1 so no VE where do i get VE from if it doesn't equal 0 ??