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Molecular evolution

Summary of Chapter 26

Subject: 
Biology
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Biology
Phylogenetics
Genetics
Evolutionary biology
Molecular evolution
DNA
Homology
Molecular phylogenetics
evolution
Nucleic acid sequence
Phylogenetic tree
Species

Chapter 26 ? Phylogeny and the Tree of Life Overview: Investigating the Tree of Life Process of evolution ? the evolutionary mechanisms (from Unit 4) Pattern of Evolution ? observations of evolution?s products over time. (focus of this chapter) Phylogeny ? The evolutionary history of a species or group of species. Systematics - A discipline focues on classifying organisms and determining their evolutionary relationships. Systematics uses data from fossils to molecules and genes to infer evolutionary relationships. (figure 26.2) 26.1 Phylogenies show evolutionary relationships Taxonomy ? the scientific discipline of how organisms are named and classified. A. Binomial Nomeclature (Instituted by Linnaeus) Binomial: The two part format of the scientific name

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

Biology Study Guide

Subject: 
Biology
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Biology
Genetics
Philosophy of biology
Phylogenetics
Evolutionary biology
DNA
Molecular evolution
Nucleic acid sequence
evolution
Homology
Mitochondrial DNA
Gene

Biology, 7e (Campbell) Chapter 25: Phylogeny and Systematics Chapter Questions 1) Which combination of the following species characteristics would cause the greatest likelihood of fossilization in sedimentary rock? I. The species was abundant. II. The species was widespread. III. The species had hard body parts. IV. The species was adapted to desert life. V. The species had a long duration in geologic time. A) III only B) III and IV C) I, II, and III D) I, II, and V E) I, II, III, and V Answer: E Topic: Concept 25.1 Skill: Comprehension 2) The ostrich and the emu look very similar and live in similar habitats, however they are not very closely related. This is an example of A) divergent evolution. B) convergent evolution. C) exaptation. D) adaptive radiation.
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