BIOL 2040 Lecture Notes - Lecture 3: Mendelian Inheritance, Inbreeding, S Phase
Document Summary
The cross between those two lines resulted in plants that were bigger. Cross two homogenous true breeding lines for different genes and get a large progeny of f1. Every f1 progeny is completely identical to the other one but are heterozygous and so are extremely uniform in nature. Higher yield in the parental lines because the parental lines were inbred. Advantage is high yield of the crop desired. If the seeds of the f1 generation were grown, different plants would form in the f2 generation and would not be genetically identical like the f1 progeny. Thus, independent assortment would occur: hybrid vigour is thought to shelter the crummy gene. Chromosomal basis independent assortment: occurs in meiosis. Heteromorphic- homologous chromosomes pair with each other but are different in size. Polygenic / quantitative inheritance: often in agriculture, people construct pure lines- homozygous. Want to make strains that are completely homozygous.
