MCDB 2150 1st Edition Lecture 2 Outline of Last Lecture I. Teacher contact informationII. Required materialsIII. Problem setsIV. Preclass assignmentsV. Practice testsOutline of Current Lecture Meiosis & MitosisII. Define somatic & germline cells, list similarities & differencesIII. Explain how germline mutations can be passed onto the next generation, whereas somatic mutations cannot.IV. Describe, using diagrams, the sequence of events in meiosisV. Distinguish between sister chromatids and homologous chromosomesCurrent LectureTypes:1.) Transmission genetics2.) Ctyo genetics3.) Molecular genetics4.) Genomics5.) Population & quantitative geneticsWHY GENETICS?- relevance to medical & life sciences- relevance to your own health- relevance to societyCHROMOSOMES!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.MITOSIS: SOMATIC (BODY) CELLSSomatic cells = exact duplicates of each other (except immune system)Mitosis = process of somatic cell divisionMEIOSIS: A SET OF CELL DIVISIONS TO FORM GAMETESPart 1: separate the homologous chromosomesPart 2: separate the sister chromatids**before meiosis, all chromosomes replicate in S phaseSUMMARY:1.) all chromosomes start as a single chromosome2.) each chromosome replicates before mitosis or meiosis3.) Somatic cells = mitosis = exact copies4.) Pre-germ cells = meiosis = germ cellsa. Meiosis 1 = replicated homologous chromosomes align across from each other5.) Homologous chromosomes separate6.) 2 new cells for meiosis 17.) meiosis 2 = replicated chromosomes line up, sister chromosomes are separated8.) 2 more new cells, each = one copy of each of the 23 kinds of chromosomes = each is
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