BIO 2133 Lecture 12: Lecture12
9 Mar 2017
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Cross parental lines to make a hybrid: cross hybrid to make an f2 generation, 2 laws that apply: segregation, and independent assortment. Incomplete dominance or codominance: e. g. , snapdragon flower color. In this case, the r allele codes for a protein/enzyme that makes the pigment red and the i cannot: the test for pink is a visual test. Incomplete dominance is a blend of both phenotypes (phenotypes) bu by looking at the genotypes it is codominant. Modifications to mendelian ratios: observed modified mendelian ratios demonstrate that one character is often caused by the complex interactions between alleles. Bombay phenotype: theres a second gene involved to see if you express a or b, h substance produces the antigens. If the hh recessive genotypes do not make the right precursor and does not have antigens for the bloodtypes: dangerous (cid:271)e(cid:272)ause you don"t want bad blood transfusions.
