Biology 1001A Lecture Notes - Lecture 7: Abo Blood Group System, Walter Sutton, Mendelian Inheritance
23 Mar 2014
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Pedigree: chart that shows all parents and offspring for as many generations as possible , the sex of individuals in the different generations, and the presence or absence of a trait of interest. Abo blood type alleles: a vs. i a is dominant, a + b co-dominance, both expressed, red blood cells have no nucleus when they mature. Tetragametic chimerism: arise from 2 separate fertilizations, not a hybrid (single fertilization, the cells themselves did not fuse together, they just made one person. 11. 1- the beginning of genetics: mendel"s garden peas. Mendel"s crosses with seven different characters in peas, including his results and the calculated ratios of offspring. In all cases, he observed a uniform f1 generation, in which only one of the two traits was present. The alleles of the genes that govern the two characters segregate independently during formation of gametes: particular chromosome could line up on the left or right.
