01:119:115 Lecture Notes - Lecture 13: Nuclear Membrane, Activex, Barr Body
27 Sep 2016
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Chromosomes theory of inheritance: genes have specific loci on chromosomes, chromosomes undergo segregation and independent assortment. Thomas morgan: did work in early 20th century, experimental embryologist, provided evidence that chromosomes are location of mendel"s heritable factors, drosophila melanogaster d. i. Has advantages of being (study organism) d. ii. 1. d. ii. 2. d. ii. 3. For a given character gene is given the symbol for 1st mutant that is observed d. ii. 4. a. ii. 4. 15. 3: correlated behavior of gene"s alleles with behavior of a chromosome pair e. i. Parental generation red eyed females x white eyed males e. ii. F1 all offspring red eyes e. ii. 1. Red eyed female x red eyed males (from f1 generation) e. iv. F2 found 3:1 phenotypic ratio e. iv. 1. Eye colored gene located on x chromosome and no corresponding locus for the gene on y chromosome e. vi. F1 all offspring red eyes e. viii. X x(wild type allele) male xy(wild type) e. ix. A specific gene is carried on a specific chromosome e. xiii. Genes on sex chromosomes exhibit unique inheritance patterns.
