Homozygous recessive having 2 of the recessive form

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Homozygous recessive: Having 2 of the recessive form of an allele (ww) Monohybrid vs Dihybrid Crosses Monohybrid: crossing 2 plants that differ in only one characteristic Dihybrid: Crosses where the parent plants differed in 2 different characteristics Mendel’s Principles
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1. Principle of Segregation: Offspring inherent one discrete unit for a trait from each parent. These units maintain their unique integrity from generation to generation 2. Principle of Dominance and Recessiveness: Some expressions of a specific trait were dominant over others 3. Principle of Independent Assortment: Different traits were not inherited together as packages. They passed from generation to generation as independent units Problems with Mendel’s Principles He happened to have selected traits that are influenced by single genes in the chromosomes of pea plants. These are monogenic traits. But there are genes that are polygenic- have more than one gene for the trait such as skin color Some of Mendel’s results were contrary to his principle of independent assortment. In face some traits did appear to be linked together The traits Mendel examined were types that are expressed as discrete categories, one thing or another. There are traits which are continuous in their potential forms such as height- large range of heights, not just one height or another
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