Lab1_Mendel - Mendel and the Gene Experiments in Plant...

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1 Mendel and the Gene • “Experiments in Plant Hybridization” Gregor Mendel 1866 • What Questions Was Mendel Trying to Answer? – addressing the basic question of why offspring resemble their parents and how transmission of traits occurs. • Menelian genetics •A trait is any characteristic of an individual. Heredity is the transmission of traits from parents to their offspring. What Traits Did Mendel Study? • Mendel chose seven easily recognizable traits: seed shape, seed color, pod shape, pod color, flower color, flower and pod position, and stem length. • Each trait had two forms, or phenotypes .
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2 Mendelian genetics Gene - a unit of heredity on a chromosome Alleles are different versions of a gene. • These inherited factors occur in pairs (genes occur on maternal and paternal homologous chromosomes) • The alleles in an individual are called its genotype . • Homozygous genotype • Heterozygous genotype The Chromosome Theory of Inheritance • Mendel’s principle of segregation : alleles segregate into different gametes during egg and
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Lab1_Mendel - Mendel and the Gene Experiments in Plant...

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