ANSC 1001 Lecture Notes - Lecture 2: Organism, Udder, Genotyping
Document Summary
Depending on the species there are certain traits we can select for esp economic traits (something we can sell and use) If selecting a recessive trait, then 25% chance getting that trait. Fenal tipic expression- judge it by the outside. Genotyping- can we force selection for that particular trait (gmos) 62 chromosomes: horse, pig, sheep, cattle, dog, cat, chicken. 78: have to have equal number of chromosomes but cannot breed between species. Chance of getting one or the other chromosome is 50:50. Chance of being born male or female is 50:50. E: extension locus: melanocyte-stimulating hormone receptor, controls the level of tyrosinase in melanocytes. The more tyrosinase, the darker the pigment: ee and ee = black/brown, ee = red, quantitative trait for dairy cows are the amount of milk that is produced, qualitative traits include eye color, hair color, etc.
