Health Sciences 2700A/B Lecture Notes - Lecture 2: Quantitative Trait Locus, Red Hair, Eye Color
25 Sep 2020
School
Department
Course
Professor
Document Summary
There are 3 main things that we want a theory or model to do: Give us a better understanding after using the theory/model than we had before using the theory/model. Genetics and epigenetics interact with the environment to shape health and wellbeing. We each have 23,000 genes in each cell nucleus of our body which means that there is quite a bit of variation. Genotype is the speci c genetic material on an individual chromosome. You can have dominant-recessive pattern, polygenic inheritance (many genes in uence a single trait), multi- factorial inheritance (genes and the environment interact), and mitochondrial inheritance (inheritance of genes from the mother"s egg) Epigenetics is the study of changes stemming from modi cation of gene expression rather than alteration of the genetic code. Epigenetic markers regulate gene expression by turning genes on or off. By controlling gene expression, epigenetic mechanisms regulate bodily processes.
