PPT-NATURAL SELECTION, SPECIATION AND PUNCTUATED EQUILIBRIUM

TELEMATICS 2016 PAGE 14 Jean Baptista Lamarck 17441829 Lamarck used two laws to explain evolution Law of use and disuse the more an organism uses a muscle or an organ the stronger the muscle or organ will developed . - Science and Bio - Technol ogy Vol. 3 , No. 4, December, 2011 27 Punctuated Equilibrium vs. Phyletic Gradualism Monalie C. Saylo 1 , Cheryl C. Escoton 1 and Micah M. Saylo 2 1 University of Antiq Vaccinium. . macrocarpon. ). Brandon . Schlautman. What is a species?. Domain- . Eukarya. Kingdom- Plantae. Phylum- . Magnoliophyta. Class- . Magnoliopsida. Order- . Ericales. Family- . Ericaceae. Is a member of the . Speciation. – formation of a new species . Species. – group of organisms that interbreed and produce fertile offspring. Subspecies. – groups that are on the way to being separate species; have started being genetically different. PUNCTUATED EQUILIBRIUM OR EVOLUTION?: 1PUNCTUATED EQUILIBRIUM OR EVOLUTION?:1element that would identify changes over time. Even assuming that fully established enduring 2manifestations of rivalries, Evolution. Speciation Basics. Individuals of different species cannot . interbreed. under natural conditions . Described as being . reproductively isolated . from one another. Populations of different species do . Concept 22.2: Speciation can take place with or without geographic separation. Speciation can occur in two ways. Allopatric speciation. Sympatric speciation. Allopatric (. “. Other Country. ”. ) Speciation. Species. – group of organisms that interbreed and produce fertile offspring. Subspecies. – groups that are on the way to being separate species; have started being genetically different. Individuals in the same species share a common gene pool. Objectives. Identify. traits that vary in populations and that may be studied.. Explain. the importance of the bell curve to population genetics.. Compare . three causes of genetic variation in a population.. Section 1 Vocabulary Pretest. Population Genetics. Microevolution. Gene Pool. Allele Frequency. Phenotype Frequency. Total genetic information in a population. Portion of gene copies of a given allele. Sympatric Speciation. Sympatric Speciation occurs . without. geographic isolation, thus it occurs at a local level. . There is something within the environment that keeps a single species separated into two or more distinct groups.. A. Species overproduce offspring that may survive an environment.. B. There is little variation among members of a population.. C. Competition for resources, mates, and space among species leads to a struggle to survive.. Gene Pool. All the alleles present in the reproducing members of a population at a given time.. The gene pool is constantly changing. Mutations add new alleles to the population. Immigration also adds new alleles; changes the allele frequency. In evolutionary terms a . species . is a group of populations whose members have the potential to interbreed in nature and produce viable, fertile offspring; they do not breed successfully with other . They do this through a series of . proposed explanations for observed phenomena. called . hypotheses. . . These hypotheses are then tested over a period of years to determine if they are supported by facts or if they need to be revised..