BIOL 101 Lecture Notes - Lecture 21: Generation Time, Degenerative Disease, Phenylketonuria
9 Nov 2016
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Concept 14. 1: mendel used the scientific approach to identify two laws of inheritance, mendel discovered the basic principles of heredity by breeding garden peas in carefully planned experiments. Mendel"s model: mendel developed a hypothesis to explain the 3:1 inheritance pattern he observed in the. F2 offspring: for related concepts make up this model, these concepts can be related to what we now know about genes and chromosomes, first: alternative versions of genes account for variations in inherited characters. Ex: the gene for flower color in pea plants exists in two versions, one for purple flowers and the other for white flowers. These alternative versions of a gene are called alleles. Each gene resides at a specific locus on a specific chromosome: second: for each character, an organism inherits two alleles, one from each parent. Mendel made this deduction without knowing about chromosomes.
