BIOL 1020 Lecture Notes - Lecture 26: Egg Cell, Thomas Hunt Morgan, Mendelian Inheritance

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1020
• Professor: Joy E.Stacey

Document Summary

Mendelian inheritance has it"s physical basis in the behavior of chromosomes: mitosis and meiosis were rst described in the late 1800s, the chromosome theory of inheritance states. Mendelian genes have speci c loci (positions) on chromosomes. Chromosomes undergo segregation and independent assortment: the behavior of chromosomes during meiosis was said to account for mendel"s laws of segregation and independent assortment. Morgan"s choice of experimental organism: several characteristics make fruit ies a convenient organism for genetic studies: A generation can be bred every two weeks. They have only four pairs of chromosomes: morgan noted wild type, or normal, phenotypes that were common on the y populations, traits alternative to the wild type called mutant phenotypes. Correlation behavior of a gene"s alleles with behavior of a chromosome pair: in one experiment, morgan mated male ies with white eye(mutant) with female ies with red eyes(wild type). The f1 generation all had red eyes.