chapter3part2 - How does Inheritance work Mendelian...

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1 How does Inheritance work? Mendelian genetics gives us some background Based on the work of the monk, Mendel Breeding experiments focused on pea plants. Traits studied were monogenic Each organism possesses two genes for each trait, one from each parent.
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2 Introduction QuickTime¥ and a TIFF (Uncompressed) decompressor are needed to see this picture.
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3 Terms to remember Allele-different versions of genes. In terms of the peas, we have one for green and one for yellow. Homozygous-having two of the same allele in a gene pair Heterozygous-having two different alleles in a gene pair. Dominant-the allele of a heterozygous pair that is expressed in the phenotype Recessive-the allele of a pair that is expressed only if homozygous. Codominant-When both alleles of a pair are expressed in the phenotype ( makes people think of blending)
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4 Genes come in pairs, as do the chromosomes that carry them.
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chapter3part2 - How does Inheritance work Mendelian...

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