LIFESCI 15 Lecture Notes - Lecture 3: Allele Frequency, Allele, Glyptodont
Document Summary
Take home message #1: species are not immutable. We can watch them change in nature or even cause them to change. A: yes, turkey breasts are bred for size. A: a gradual process in which something changes into a different and usually more complex or better form . A change in allele frequencies within a population. Gene: section of dna 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). We can measure the frequency of b and b. Take home message #2: evolution is a change in allele frequencies within a population. Unexpected patterns darwin observed (that got him thinking ) (maybe they used to be the same species). Similarity between fossils of extinct species and the living species in an area.
