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Evolution of Arthro.

Entomology

QuestionAnswer
Invertebrates and Arthropods both? Lack backbone; posses an exoskeleton
Classification system involves? systematics (evolutionary relationships) and taxonomy ( classification, nomenclature).
Synapomorphy: a characteristic present in an ancestral species and shared exclusively (in more or less modified form) by its evolutionary descendants.
Phylogenetic trees can be: monophyletic or paraphyletic
Monophyletic: descended from a common evolutionary ancestor or ancestral group, especially one not shared with any other group.
Paraphyletic: descended from a common evolutionary ancestor or ancestral group, but not including all the descendant groups.
Clades: grouping that includes a common ancestor and all descendants (living and non-living).
Taxonomic classification was invented by? Carolus Linnaeus (father or taxonomy)
Classification: Kingdom (King) Phylum (Phillip) Class (Came) Order (Over) Family (From) Genus (Great) Species (Spain)
Evolution can be? Small-scale and Large-scale
Small-scale evolution: Changes in gene frequency in a population from one generation to the next
Large-scale evolution: The descent of different species from a common ancestor over many generations.
Microevolution: change in gene frequencies ex: peppered moth
Macroevolution: descent from common ancestor (character change: -can happen quickly or slowly -can occur within a lineage or several -single direction or reversal)
stasis: no change for long periods of time
Speciation: lineage splitting
Species: group of organisms that can interbreed in nature.
Evolution: -populations: group or organisms that copulate -Unity and diversity of organisms -Modified descendants of common ancestors
Natural selection: those organisms that adapt to their surroundings will produce fitter offspring and tend to have more offspring.
Co-evolution: -endosymbionts -phytophagy -parasites
Created by: Zayla
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