BIOL239 Lecture Notes - Lecture 4: Mendelian Inheritance, Null Hypothesis, Synapsis
17 Apr 2016
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Euploid: species contain only complete sets of chromosomes. Polyploids: euploids that carry three or more complete sets of chromosomes. Monoploids: organisms which have only one complete set of chromosomes. When individuals have different chromosome counts in their bodies, it mitosis: ex. Triploidy: can be viable, generally not fertile because there is an imbalance of gametes. The number of parental will always be more than the recombinant if genes are linked. Chi squared test: used to evaluate hypothesises that two genes assort independent or are genetically linked. Indicates how often an experimentally observed deviation from a particular hypothesis will occur solely by chance. If the genes are sorting significantly different than expected, independent assortment, the null hypothesis is rejected and the genes are linked. Null hypothesis: # of parental phenotypes = # of recombinant. Degree of freedom is the number of classes 1.
