LIFE 102 Lecture Notes - Lecture 33: Gamete
Document Summary
The idea that genetic material from the two parents blends together. The idea that parents pass on discrete heritable units. *mendel documented a particulate mechanism through his experiments with garden peas. A heritable feature that varies among individuals e. g. flower color. Each plant has sperm-producing organs and egg-producing organs. *chose to track characters that varied in an either-or manner. Plants that produce offspring of the same variety when they self-pollinate. When f1 individuals self-pollinate or cross pollinate with other f1 hybrids, the f2 generation is produced. Homologous chromosomes carrying the two alleles of a given gene separate from one another so that each allele ends up in a different gamete. *when mendel crossed contrasting, true-breeding white and purple flowered pea plants. *when mendel crossed the f1 hybrids with each other, many of the f2 plants had purple flowers. *mendel discovered a ratio of about 3:1 purple to white flowers, in the f2 generation.
