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Chapter 19. Organizing Information About Species. DOMAIN. Eukarya. Eukarya. Eukarya. Eukarya. Eukarya. KINGDOM. Plantae. Plantae. Plantae. Plantae. Plantae. PHYLUM. Magnoliophyta. Magnoliophyta. Magnoliophyta. Magnoliophyta. Magnoliophyta. CLASS. Magnoliopsida. Magnoliopsida.
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Chapter 19 Organizing Information About Species
DOMAIN Eukarya Eukarya Eukarya Eukarya Eukarya KINGDOM Plantae Plantae Plantae Plantae Plantae PHYLUM Magnoliophyta Magnoliophyta Magnoliophyta Magnoliophyta Magnoliophyta CLASS Magnoliopsida Magnoliopsida Magnoliopsida Magnoliopsida Magnoliopsida ORDER Apiales Rosales Rosales Rosales Rosales FAMILY Apiaceae Cannabaceae Rosaceae Rosaceae Rosaceae GENUS Daucus Cannabis Malus Rosa Rosa SPECIES carota sativa domesticus acicularis canina COMMON carrot marijuana apple arctic rose dog rose NAME Fig. 19-2, p. 302
Parsimony Analysis A To get a sense of how parsimony analysis works, think about a few items that differ in measurable properties. For example, the following three objects differ in two characters, color and shape: Fig. 19-11a, p. 310
B If you shuffle these objects, there are only three different ways to put them next to one another: or or Fig. 19-11b, p. 310
C Now think about the total number of differences there are between each pair of adjacent objects. In this example, the middle arrangement has a total of two differences. The others have three: 2 differences 1 difference 1 difference 1 difference 2 differences 1 difference D If we were to create these three arrangements by changing one object into the other two, one difference at a time, the middle arrangement would take the fewest number of steps. Fig. 19-11c, p. 310
19.6 Preview of Life’s Evolutionary History ___________________ research yields an ever more specific picture of how all life is related by shared ___________________ These relationships are organized using diagrams such as a ___________________
Honeycreeper Diversity Deciphering evolutionary relationships helps efforts to preserve ___________________ diversity
Classification Systems Bacteria Archaea Protists Plants Animals Fungi A This tree represents all life classified into six kingdoms. We have discovered that the kingdom of protists is not monophyletic, so some biologists now divide it up into a number of new kingdoms. Fig. 19-14a, p. 312
Bacteria Archaea Eukarya B This tree represents all life classified into three domains. The kingdoms protists, plants, fungi, and animals are subsumed into domain Eukarya. Compare Figure 19.15. Fig. 19-14b, p. 312