BS 162 1st Edition Lecture 9 Autosomal Dominant Trait Only need 1 copy of the gene to show the trait i e trait is dominant 50 chance that it is passed on to offspring of a person that has the abnormal copy if you do not show the trait there is no chance of passing it onto the offspring Examples of Autosomal Dominant Trait Huntington s Disease Huntington s disease causes neuron death in 3 parts of the brain which leads to uncontrolled movements emotional disturbances and mental deterioration Abnormality in 1 gene Autosomal Recessive Both parents pass on the allele for the condition only then will it be expressed Individuals with one copy of the allele have a normal phenotype but they are carriers Sex linked on either X or Y chromosomes Hemophilia the protein that helps your blood clot is not produced correctly In 5 000 males have hemophilia This gene is found on the X chromosome How does human genetic information move from generation to generation Pedigree Analysis in humans pedigree analysis is an important tool for studying inherited diseases These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute pedigree analysis uses family trees and information about affected individuals Inheritence how info is passed on and how it is expressed typical mendelian genetic inheritance patterns non mendelian genetic inheritance patterns gene therapy epigenetics GMOs a certain gene or even a promoter regulator from another species is added to an organism to achieve some desirable quality in the GMO food or animal GMOS