BIOLOGY 283 Lecture Notes - Lecture 22: Dystrophin, Melanin, Abo Blood Group System
4 Dec 2018
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Document Summary
Mutations that give rise to muscular dystrophy on. Becker ( severe ) a always premature truncation of translation ( mild ) a shorter partially functional dystrophin: modifier genes. E genes that work with other genes to control the expression of a particular trait. In humans , modifier genes help control the trait of the eye color influencing the level of melanin present in the human eye to provide a range of eye colors from blue to brown . Recessive alleles have diminished or absent function. Function on the white gene encodes a transporter protein that moves pigment precursors into the eyes during development . more transport more pigment. Dominance , recessivity and molecular function , continued. Diabetes called insulin insensitive diabetes affected individual are unresponsive to insulin be their insulin receptors are abnormal. Insulin receptor genes causing this have deletions of part of the coding region .
