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cladogram

Rawle Phylogeny II

Subject: 
Biology
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Phylogenetics
Evolutionary biology
Synapomorphy
Biology
Common descent
Symplesiomorphy
Species
Homology
cladogram
Cladistics

This week?s Bio seminar Friday, Jan. 23, at 12:00 in DV2082 Sapna Sharma, York University A landscape perspective: The effects of climate change on aquatic ecosystems 1 Lecture 5: Phylogeny II Avoid common mistakes Define homologous and analogous characters Distinguish derived and ancestral characters 2 How did you make your decision? Who is more closely related to salamanders? A. Lungfish B. Humans 3 Trees are hypotheses 4 Jetz et al. 2012. Nature 491: 444-448 But how do we construct trees? 5 Similar species are likely related Taxa that are more similar are likely more closely related than less similar species Morphology DNA sequence Behaviour ? 6 Similarity due to shared ancestry produces homology 7

Ap Biology Ch 25

Subject: 
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

Powerpoint: Multicellularity, Plate tectonics, Mass extinction, Adaptive radiation, Evolution, Cladistics

Subject: 
Biology
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evolution
cladistics and taxonomy
cladogram
multicellularity


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