BIOL 202 Lecture Notes - Chloroplast, Quantitative Trait Locus, Chloroplast Dna
21 May 2012
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This brings us to mendel"s second law; independent assortment, which says that, is two characteristics follow independent assortment, then they can be treated as two separate crosses. Through specific crosses, it is possible to create modern crops which contain both of these phenotypes. These characteristics don"t have to, and often don"t lie on the same chromosome: they can be on completely separate parts of the genome. Going back to mendel"s original pea plant example, we can look at two difference characters, in this case color and shape, and see whether or not the sort independently. The f1 generation with independent assortment should be all r/r. y. y (complete heterozygocity) These f1s are then crossed to produce the results seen to the right: if they sort independently, which they do, they should sort into a 9:3:3:1. This is known as a dihybrid cross (two different loci involved)
