PPT-Mutations 2

Bases A T C G Codons Genes Chromosome DNA Words Chapters Book Not passed on to offspring Can be passed on to offspring M ito sis M eio sis Mutations in Cell Division A single gene. Changes in . DNA. that affect genetic information. Gene Mutations. Point Mutations – changes . in one or a few. nucleotides. Substitution. THE FAT CAT ATE THE RAT. THE FAT HAT ATE THE RAT. Insertion. Mutations. Any unpredictable change in the structure or amount of DNA of an organism is called a . mutation. . . Most . mutations occur in . somatic (body) cells. and are not passed from one generation to the next. . or. How a perfectly good system can go wrong go wrong go wrong. There are 2 types of mutations. 1)Chromosomal rearrangements. . There are too many or too few chromosomes. (nondisjunction and polyploidy). Mutations are changes in the genetic material. . Mutations may be genetic mutations or chromosomal mutations.. Genetic Mutations occur in the “code” on DNA or mRNA. Mistakes in . copying the DNA :. Jessica Hawley. Compiled . By: . C. Kohn, Waterford, WI. Objectives. Identify and analyze impacts of mutation.. Interpret impacts of mutation.. Analyze genetic information to determine mutations.. Work on SAE Record Books.. >2500 cancer genomes: Overall . functional . impact. Slides freely . downloadable . from . Lectures.GersteinLab.org. . & “tweetable” . (via . @. markgerstein. ). . See last slide . for more info.. http://io9.gizmodo.com/10-unusual-genetic-mutations-in-humans-470843733. Unharmful. Mutations. Mila . Kunis. has complete . heterochromia. . Kate Bosworth has . sectoral. . heterochromia. . Angelina Jolie has central . Nobody’s perfect all the time . About 1/10 billion base pairs end up with a error or mutation . Mutation: Mistake in DNA replication or an environmental effect that . results. in a change to the nitrogenous bases in DNA or RNA. . Changes in the genetic material. Mutations can occur in two different types of Cells:. 1. Somatic (body) cells. 2. Gamete (sex or germ) cells. Mutations in somatic cells. Usually result in killing that body cell only.. Point mutations. single base change . silent mutation. no amino acid change. redundancy in code. missense. change amino acid. Changes the final protien. nonsense. change to stop codon. Stopping prematurely . Given a mutation, identify its type. Predict how a mutation will affect a protein.. Mutations. Changes in genetic material (DNA). 2 main types of mutations. Point mutation- change in one or a few nucleotides (letters). The sequence of bases in DNA are like the letters of a coded message or even the letters of a simple alphabet. . If we change the sequence of the letters do we change the nature of the message?. That . Conditional mutations. Point mutations. In . point mutations . the sequence of the DNA has been altered at a single position. Where this change consists of replacing one nucleotide by another, it is known as a . KEY CONCEPT:. . Mutations. are changes in genetic material.. VOCABULARY:. Mutation, point mutation, . frameshift. mutation, polyploidy. Mutations – extension from gene expression. . Changes in genotype.