BIOLOGY 1P03 Lecture Notes - Punnett Square, Gregor Mendel, Foil Method
13 Dec 2013
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Week 7: monday, october 11th (no lecture- thanksgiving holiday), wednesday october 15th to. Genes are segments of dna at specific locations called loci (singular locus) on chromosomes. Figure 10-1 the relationship among genes, alleles, and chromosomes: mutations are the source of alleles, an organism"s two alleles may be the same or different. 10-4 cross of pea plants that are true-breeding for white or purple flowers. Prevented self-fertilization of pea plants by removing male reproductive organs from the flowers. Permitted cross-fertilization by using pollen from a different plant. Crossed true-breeding lines of garden pea plants. Mendel observed pairs of contrasting forms (fig. Mendel followed inheritance for 3 sexual generations: Unlike previous scientists, mendel carefully counted the offspring and kept detailed records of his experiments. When reciprocal crosses were conducted, it did not matter whether the genetic determinants for seed shape are situated in the female or male parent. results were identical, all progeny had round seeds.
