- University of North Carolina - Chapel Hill
- Biology 101
Last Modified: 2011-07-08
Related Textbooks:Campbell Biology: Concepts & Connections with MasteringBiology® (7th Edition)
Related Textbooks:Chemistry: The Central Science with MasteringChemistry® (12th Edition) (MasteringChemistry Series)
2) Individuals in a population vary extensively
3) These varying traits are inherited
2. NS is contingent on time and place
3. Significant evolutionary change can occur in a short time
2. Genetic Drift
3. Gene Flow
2. Infinitely large
3. Complete Isolation (no immigration/emigration)
4. Random mating
5. Equal reproductive success (survive equally and have same number of offspring)
Ex. Stretched giraffe neck
2. Stabilizing Selection
3. Disruptive Selection
4. Sexual Selection
5. Balancing selection
Ex. White moths blend in to lichen
Ex. Over and underweight babies.
Ex. two typed of bills in species, for different plants.
Ex. Male more larger and more colorful, because genetic "winners" reproduce more.
Ex. Sickle cell anemia, Heterozygote less likely to get malaria.
2. Behavioral Isolation
4. Mechanical Isolation
5. Gamete Isolation
Ex. Pollination by different birds.
2. Hybrid Sterility
(Honey Creepers in Hawaii)
Plants: can become reproductively isolated in one generation due to polyploidy.
2. Formed in outer space (presence of amino acids in interstellar clouds)
Words From Our Students
"StudyBlue is great for studying. I love the study guides, flashcards, and quizzes. So extremely helpful for all of my classes!"
Alice, Arizona State University
"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"
Tim, University of Florida
"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly! I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"
Jennifer, Rutgers University
"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"