4 related concepts that make up Mendel's Model
1. Alternative versions of genes account for variations in inherited characters. ex:allele
2. For each character, an organism inherits two alleles, one from each parent.
3. If two alleles at a locus differ, then one(the dominant allele) determine's the organism's appearance, and other(the recessive allele) has no noticeable effect on appearance. ex: F1 plant had purple flowers b/c allele for the trait is DOMINANT
4. (NOW.K.A. law of segregation) The two alleles for a heritable character separate (segregate)during gamete formation and end up in different gametes... thus egg or sperm get one of two alleles present in organism...this corresponds to distribution of homologous chromosomes to gametes in meiosis