BIO 150 1nd Edition Lecture 22 Outline of Last Lecture I Case Study II Genetics of Cardiomyopathy Outline of Current Lecture II Genetics of Cardiomyopathy Current Lecture Mendel studied 2 distinct phenotypes flavors alleles Each trait was controlled by 1 gene Most traits controlled by more than one gene Meiosis DNA replication occurs before meiosis takes place 1 Homologous chromosomes pair 2 Crossing over paired their crossing over spindle elongated 3 Microtubules capture chromosomes first arrange on equator 4 Sisters still together homologue go to separate poles 5 Another mitotic division elongated no spindle 6 Spindle forming 7 Sisters align at the equator 8 Chromosomes separate 9 Form new nuclear envelope 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 Recombination creates new allele combinations Parental chromosomes replicate sisters New combination showed genes of same chromosome could be separated onto different chromosomes Ratios of R and Y are assorting independently F2 phenotype ratio changed and F1 phenotypes stayed the same
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