BIOL 203 Lecture Notes - Lecture 13: Dihybrid Cross, Mendelian Inheritance, Gamete
Document Summary
Genetics: mendel & the gene idea i (chapter 14) How: blending hypothesis: genetic material of parents blend together (yellow + blue makes green, particulate hypothesis: idea that parents can pass on discrete heritable units called gene. Explains reappearance of traits after several generations. Mendel: chose to track only those characters (heritable feature) that were either-or . F1 generation: hybrid offspring of p generation. F2 generation: offspring of two f1 generation: most important generation that mendel studied. Mendel"s model: reasoned that purple color was affecting ower color. Called purple: dominant & white: recessive: the factor for white owers was not diluted or destroyed because it appeared again, observed the same pattern of inheritance with other pea plant factors, heritable factor : gene. Thursday, october 22, 2015: alternative versions of a gene. For each character an organism inherits two alleles, one from each parent: the two alleles may be identical or different.
