AN237 Lecture Notes - Lecture 13: Epigenome, Zygote, Microevolution
Document Summary
1/2 of sperm = x , 1/2 of sperm = y: male gametes determine sex of zygote, sex linked traits (on x chromosomes) Red-green colour-blind (mostly in men) because its x-linked: because it cannot hide. Hemophilia (blood disease) or royal blood disease: alexi, showed up so often, and natural selection made it disappear. Mendelian inheritance: principle of segregation, principle of independent assortment, genetic traits can be. Characteristics or traits acquired in an individuals lifetime are not heritable: random mutation, epigenetics (lamarckian?) (outside genome) Chemical bags outside the dna influence how genes are expressed these are influenced by environment. Evolution: the modern synthesis: basically evolution by natural selection with genetics and variation, is not the only force changing gene frequencies from 1 generation to the next. Microevolutionary forces: change the frequency of gene/traits in a population, small genetic changes that occur within a pop to make it better suited to its.
