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Unformatted text preview: The Start of Modern Genetics Gregor Mendel o Conducted hybridization experiments on pea plants o 1865 proposed particulate theory of inheritance. Mendels Experiments and the Laws of Inheritance o Mendel selected peas as his experimental organism o Well defined alternative traits that were heritable o Established that there are dominant traits o Reciprocal crosses showed that it matter which sex donated the trait o True-breeding strains parental generation (P) o First filial generation F 1- Progeny from parental generation being crossed o Second filial generation F 2 Progeny when F 1 Individuals are crossed Mendels 1 st Law The Law of Segregation Traits are determined by genes with each adult carrying two version (alleles) of each gene Gametes carry only one allele for each trait Alleles segregate into gametes in a ratio of 1:1...
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