BIO 120 Lecture Notes - Lecture 14: Quantitative Trait Locus, Mutual Exclusivity, Abo Blood Group System
Document Summary
Homozygous: inherits 2 of the same variations of a gene. Heterozygous: inherits 2 different variations of a gene. He figured out the law of segregation: there are different forms of a single gene (we call these alleles. ) These different forms account for variations in characters such as flower color, etc: organisms must inherit 2 copies of a gene for the same character (1 from each parent) What"s the phe(cid:374)ot(cid:455)pe (cid:396)atio of offsp(cid:396)i(cid:374)g (cid:894)(cid:449)ith (cid:396)espe(cid:272)t to flo(cid:449)e(cid:396) (cid:272)olo(cid:396)(cid:895) fo(cid:396) the f2 ge(cid:374)e(cid:396)atio(cid:374): gametes receive one. What is the genotypic ratio of offspring for the f2 generation: one big p from mom and one little e from dad. Pe ee: a(cid:374)othe(cid:396) e(cid:454)a(cid:373)ple of medel"s (cid:449)o(cid:396)k: **character of seed color: y = yellow; y = green character of seed shape: r = round; r = wrinkled. Yellow round (yyrr) x green wrinkled (yyrr) = yyrr x yy rr f1 x f1 dihybrid cross.
