BIOL 304 Study Guide - Darwinism, Orange Roughy, Gene Duplication

• School: McGill University
• Department: Biology (Sci)
• Course: BIOL 304
• Professor: Graham Bell

Document Summary

Contemporary evolution affects conservation biology: evolutionary change can occur very rapidly on contemporary time scales. changes in gene expression arise from mutations. how different changes in sequences lead to different changes in phenotype. studying a lot of mutations, model organisms. Introduce mutations into genetic information of certain lines and observe effects. Mutations: mutation supplies the raw material for evolution but does not determine its direction, mutation is inevitable, errors occur at a certain rate during replication, many mutations do not affect essential function. nivea (albino) and pallida (yellow/red pattern) mutations are due to tam3. Te: affect a biosynthetic pathway for flower colour in the wt. Antirrhinum flower: genomes can be manipulated in the lab. deficiens causes less sepals/sparser flowers, plena causes extra sepaloid/petaloid structures with fuller flowers. centroradialis mutations causes a flower with altered symmetry on top.