BIOL 141 Lecture Notes - Lecture 17: Melanin, Epistasis, Petal
Document Summary
There are genes which have their own unique phenotypes : unique phenotype per genotype. Incomplete dominance: both phenotypes are expressed, resulting phenotype is an intermediate between the 2, blending Codominance: both traits are expressed but don"t blend into an intermediate. Heterozygote: expression of one allele and another leads to blending! B-gene: programs how much melanin genes produce, kind of how albinism works, can"t produce melanin if you don"t have the enzyme to do it. B: how much is supposed to be produced. Result of multiple genes controlling all the phenotypes.