BIOL 222 Lecture Notes - Lecture 12: Binomial Theorem, Mitosis, Gamete
6 Oct 2016
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Lecture #12: mendel"s laws & inheritance of sex chromosomes. Practice problem: fraction multiplication, binomial expansion equation, pedigree charts. Outline: chromosome theory of inheritance and mendel"s laws, autosomes, sex chromosomes, and sex determination in animals, drosophila experiments by th morgan, dosage compensation. Chromosome theory of inheritance: used microscopy to characterize mitosis, meiosis, and fertilization, hertvig, stausburger, flemming. Chromsomes are carriers of genetic material: n geli & weismann. Substance found in cells that is responsible for transmission of traits from parent to offspring. Both parents contribute equal amounts: boveri and sutton. Chromosome theory of inheritance: 1. chromosomes contain genetic material, 2. chromosomes replicate, passed from parent to offspring, cell to cell. Retains individuality: 3. eukaryote are usually diploid, chromosomes in homologous pairs, diploids create haploid genes, 4. chromosomes segregate independently of each other, 5. each parent contributes a chromosome to the offspring, equivalent complement of genes.
