Chromosome Mutations and Disorders: Types, Causes, and Consequences, Slides of Biology

Download Chromosome Mutations and Disorders: Types, Causes, and Consequences and more Slides Biology in PDF only on Docsity! Chromosome Mutations and Chromosome Disorders Docsity.com What is this diagram called? A Karyotype Chromosomal mutations - involve many genes and are often fatal. If the zygote develops, the individual is often sterile. • Deletions-part of a chromosome is left out • Insertion/Duplication - occur when part of one chromatid breaks off and attaches to its sister chromatid. Docsity.com • Inversions-occur when part of a chromosome breaks out and is reinserted backwards • Translocations-occur when part of one chromosome breaks off and attaches to a different chromosome Docsity.com Chromosomal Disorders • Nondisjunction-the failure of homologous chromosomes to separate properly during meiosis- both of the homologous chromosomes move to the same pole during meiosis. – can result in trisomy, monosomy, or triploidy Homologous chromosomes fail to separate Meiosis I: Nondisjunction Meiosis II Docsity.com