MBG 2400 Lecture Notes - Lecture 10: Epigenetics, Acetyl Group

• School: University of Guelph
• Department: Molecular Biology and Genetics
• Course: MBG 2400
• Professor: Barry Micallef

Document Summary

October 5, 2015: genetic variation leads to phenotypic variation, most dna does not code for genes, huge levels of sequence variation between individuals within a species exist outside of gene regions. Genome structure: gene content can vary among individuals of the same species, genomes of ancestrally related organisms share similar organizational features- A genotype is the genetic constitution of an individual in terms of alleles at a specific gene or across a series of genes. This is contrasted to a phenotype, which are the observable characters in an individual that arise form the genotype. In more practical terms, the phenotype is the result if the genotype, the environment to which the individual is exposed, and the interaction that occurs between the gene and the environment. Genetic variation: heritable differences in genome constitution that result in observable differences in phenotype. Gene: the sequence of dna that is transcribed into an mrna molecule, which is then translated into a protein.