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Systematics

phylogeny

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Biology
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Phylogenetics
Molecular clock
Systematics
Biology
Cladistics
Phylogenetic tree
Species
evolution
taxonomy
Taxon
Outline of evolution

Chapter 20 PHYLOGENY Introduction to Phylogeny Phylogeny is the evolutionary history of a species or group of related species Discipline of systematics classifies organisms and determines their evolutionary relationships Taxonomy is the ordered division and naming of organisms Cladistics Cladistics classifies organisms by common descent A clade is a group of species that includes an ancestor and all its descendents Using Derived Characters Characters can be used to infer evolutionary relationships. Molecular Clocks Molecular clocks use mutation data in related genes from different species Number of nucleotide changes is assumed to be proportional to the time since last common ancestry ie. Few changes = little time passed; many changes = lots of time passed

Ap Biology Ch 25

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Biology
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Phylogenetics
Biology
Science
Genetics
Maximum parsimony
Cladistics
Phylogenetic tree
Systematics
Clade
Molecular evolution
Molecular phylogenetics
cladogram
#AP Bio #CampbellBiology

Chapter 25 Phylogeny and Systematics Overview: Investigating the Tree of Life This chapter describes how biologists trace phylogeny The evolutionary history of a species or group of related species Biologists draw on the fossil record Which provides information about ancient organisms Figure 25.1 Biologists also use systematics As an analytical approach to understanding the diversity and relationships of organisms, both present-day and extinct Currently, systematists use Morphological, biochemical, and molecular comparisons to infer evolutionary relationships Figure 25.2 Concept 25.1: Phylogenies are based on common ancestries inferred from fossil, morphological, and molecular evidence The Fossil Record Sedimentary rocks Are the richest source of fossils

Campbell Biology 9th Ch. 26 Powerpoint

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Biology
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Scientific classification
Science
Evolutionary biology
Phylogenetics
Systematics
Biology
Lizard
Evolution
Tree of life
Education
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Phylogenetics
Science
Biology
taxonomy
Cladistics
Systematics
Paraphyly
Homology
Monophyly
Molecular phylogenetics
Linnaean taxonomy
Clade
education
Campbell Biology

Phylogeny and the Tree of Life Chapter 26 Overview: Investigating the Tree of Life Legless lizards have evolved independently in several different groups ? 2011 Pearson Education, Inc. Figure 26.1 Phylogeny is the evolutionary history of a species or group of related species The discipline of systematics classifies organisms and determines their evolutionary relationships Systematists use fossil, molecular, and genetic data to infer evolutionary relationships ? 2011 Pearson Education, Inc. Concept 26.1: Phylogenies show evolutionary relationships Taxonomy is the ordered division and naming of organisms ? 2011 Pearson Education, Inc. Binomial Nomenclature In the 18th century, Carolus Linnaeus published a system of taxonomy based on resemblances
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