Allopatry Study guides, Class notes & Summaries

Allopatry - Vicariance - Chance separation (earthquake, etc.) Allopatry- Dispersal - A population moves to a new habitat, colonizes it, and forms a new population Although both are possible, which of the following situations is more probable regarding the evolutionary history of a species (i or ii): i. Common characteristics are usually shared with other closely related organisms ii. Common traits evolved several times throughout history and have nothing to do with shared ancestry - i? Ap...

Bio 182 Exam 2 ASU Latest Version Graded A+ abiotic physical conditions adaptive plasticity one genotype has multiple phenotypes & environments trigger change allopatry populations occur in different places biological species group of potentially interbreeding species biotic other organisms Cladistics Grouping is based on common ancestry Do enzymes maintain a rigid structure while catalyzing? No it is constantly changing Do smaller or larger populations have more chanc...

A population of rodents, called population A, lived on a large landmass. One group of the population dispersed to a nearby island. Two million years later, the island population split into two smaller, equalsized populations when a river formed across the middle of the island. Now two new species, A1 and A2, have evolved on the island. They have replaced the population from which they were derived. Use the image to answer the question.Which diagram represents the phylogeny of the populations ...

species - evolutionarily independent population or group of populations synapomorphy - a trait that is found in certain groups of organisms and their common ancestor, but is missing in more distant ancestors; identifies monophyletic groups; homologous traits that can be identified at the genetic, developmental, or structural level biological species concept - reproductive isolation between populations (they don't breed and don't produce viable, fertile offspring) - reproductive isolation...

EVOLUTION FINAL EXAM | 57 questions and answers latest hybrid sterility isolation - Sterile hybrids genetic incompatibility` Two loci can show genetic incompatibilities T/F - True Dobzhansky-Muller incompatibility - Solves the problen of how genetic incmopatibilities can evolve between two populations Epistasis - When the effects of one gene are modified by one or more other genes. this is genetic incompatibility as well How is epistasis identified. - When the total effect on f...

Why might Pasteur's experiment be inconclusive? - Answer The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - Answer To ensure that results were not achieved by random chance What is the definition of a replicate? - Answer Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law of succession suggest?...

McMaster Bio 1M03 Exam Verified A Score Why might Pasteur's experiment be inconclusive? - The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - To ensure that results were not achieved by random chance What is the definition of a replicate? - Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law ...

Why might Pasteur's experiment be inconclusive? - Answer The swan-necked flask broth may not support cell growth, or the broth was poisoned. Experiment did not confirm hypothesis that all cells come from pre-existing cells Why are replicates important in experiments? - Answer To ensure that results were not achieved by random chance What is the definition of a replicate? - Answer Unit that shares a common thing (4 mice in one cage = 1 replicate) What does the law of succession suggest?...

A large population of mice (2000 individuals) lived in an area in the desert dominated by small shrubs. When the population size got too high, a small group of 6 individuals left and colonized an area adjacent to the original population's home, but the adjacent area was primarily dominated by trees instead of shrubs. There is no gene flow between the dispersers and the original population. A researcher sequenced the genomes of representative individuals from both populations and found subst...

Spatial & Temporal Scale of Perception -Spacial Scale= space -Temporal Scale= time -i.e.: instincts & responses Impediments to Solving Environmental Problems -Spatial & Temporal Scales -Lack of education -Lack of scientific understanding -"cheap citizen" (doing harm & expecting others to fix it) Types of Errors -Type 1: Rejecting a null hypothesis when its true -Type 2: Accept a null but its false Null Hypothesis Statement of no trend, effect, or impact (Give...