LIFESCI 15 Lecture Notes - Lecture 3: Heritability, Allele Frequency, Slacker
Document Summary
They can go 20 hours without food, some lasted longer while other only went 15 hours without food. What if you only let the best ies reproduce? (top 20% of starvation resistance) Only increased by 1 hour after 1 generation. After 10 generations, it increased by 8 hours. After 60 generations, it went up to 160 hours w/o food! Take home message #1: species are not immutable(unchangable). We can watch them change in nature or even cause them to change. Yes, we saw it in the rat experiment. A gradual process in which something changes into a different an usually more complex or better form. A change in allele frequencies within a population. Gene: section of dan instructing how to produce a trait. Allele: one variant of a gene (several may exist) we each carry two copies of every gene (one from our mother, one from our father) sometimes the two alleles are the same (bb or bb).
