Vertebrate Zoology

Litty Carter
Mind Map by Litty Carter, updated more than 1 year ago
Litty Carter
Created by Litty Carter almost 7 years ago
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Vertebrate Zoology Mind Map on Vertebrate Zoology, created by Litty Carter on 04/22/2013.
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Vertebrate Zoology
1 ZOOLOGY
1.1 "The branch of biology that deals with animals and animal life. Includes: Structure, behaviour, physiology, development and classification of animals
2 NATURAL SELECTION
2.1 Organisms produce more offspring than ever survive
2.1.1 Organisms within species vary
2.1.1.1 Any variation which gives an individual a survival advantage will be passed down to the next generation (if trait is heritable)
2.1.2 Some die because those with survival advantage outcompete them
2.2 EVOLUTIONARY MECHANISMS
2.2.1 Mutation
2.2.2 Gene Flow
2.2.2.1 Movement of genes between populationa
2.2.3 Genetic Drift
2.2.3.1 Random changes in gene frequencies within a population
2.2.4 Recombination
3 Speed of Evolution
3.1 GRADUAL (Darwin and John Maynard Smith)
3.1.1 Small changes within species (microevolution)
3.1.1.1 evolution of new species, families etc. (macroevolution)
3.2 RAPID (Gould and Mayr)
3.2.1 PUNCTUATIONISTS
3.2.1.1 Species show little or no evolutionary change throughout history
3.2.1.1.1 When speciation does occur, it happens over a short period of time
3.2.1.1.1.1 Gradualism is rare in fossil records: intermediate forms are rare i.e. missing links are indeed missing
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