Concept Map: Complete the attached Systematics Concept Map. Type your answer on each level in the space provided. Be sure to include your name; save the file to your computer, Requirements Levels and Key Terms: Levels and Key Terms Level Terms Level I: Systematics Level II: Phylogeny Biological diversity Level III Taxonomy Cladistic analysis Level IV: Identification of species Shared primitive characters Classification of species Dichotomously branching phylogenetic tree Shared derived characters Level V: Binomial Genus, family, order, class, phylum, kingdom Homologous similarities Relative time of origin Fossil records Outgroup comparison Clade Degree of divergence Level VI: Molecular comparisons (DNA, protein) Genus and species Morphology Fossils, DNA, and protein comparisons
Evolution
The history and science of origin and evolution comprise two events, the beginning of life and expansion of life. Our earth originated about 4.5 billion years ago. The term evolution is derived from two Latin words and means the act of unfolding or unrolling. English philosopher Herbert Spencer first used it. Evolution is defined as the change in heritable traits of biological populations over successive generations. These traits are the manifestations of genes that are passed down from parent to offspring during reproduction.
Cladistics
Cladistics is a technique in the classification of organisms, where they are grouped into different clades. The proof for the relationships that are hypothesized is based on the shared derived characteristics known as synapomorphies. These characteristics do not exist in many of the distant ancestors and groups. The common ancestor along with its descendants is considered to be a part of the clade. The rate of closeness is directly proportional to the cladistic grouping and is useful in analyzing the evolutionary mechanism.
Outgroups
Outgroups are significant in studying cladistics or phylogenetics (that describe the evolutionary relationship between different organisms). Further, it is also important to understand the differences and similarities between different organisms.
Taxonomy
It is the branch of biology that works with the identification of organisms at first, then naming, and classification of them into phenetic or phylogenetic groups (a classification system). In other words, it is the scientific study of biological diversity and a part of systematic biology.
Phylogenetics
Phylogenetics is the scientific study of how various groups of organisms are related at the evolutionary level. It finds the relationship between various organisms based on their evolutionary similarities and differences. It is a part of the taxonomy. Although the taxonomic study is not only concerned about phylogeny but taxonomic studies are also concerned about the classification and nomenclature of the different individuals from different taxon.
Concept Map: Complete the attached Systematics Concept Map. Type your answer on each level in the space provided. Be sure to include your name; save the file to your computer,
Requirements Levels and Key Terms: Levels and Key Terms Level
Terms Level I:
Systematics Level II:
Phylogeny Biological diversity Level III
Taxonomy Cladistic analysis Level IV:
Identification of species Shared primitive characters Classification of species Dichotomously branching phylogenetic tree Shared derived characters Level V:
Binomial Genus, family, order, class, phylum, kingdom Homologous similarities Relative time of origin Fossil records Outgroup comparison Clade Degree of divergence Level VI:
Molecular comparisons (DNA, protein) Genus and species Morphology Fossils, DNA, and protein comparisons
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