SCIENCE
VIRUS AND BACTERIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are all alike
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All organisms have a recent common ancestor
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The order in which we can watch organisms evolve
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The order in which derived characters evolved
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Detailed explanation-1: -In contrast to Linnaean classification, cladistic analysis focuses on certain kinds of characters, called derived characters, when assigning organisms into clades. A derived character is a trait that arose in the most recent common ancestor of a particular lineage and was passed along to its descendants.
Detailed explanation-2: -Cladistics is a method of hypothesizing relationships among organisms-in other words, a method of reconstructing evolutionary trees. The basis of a cladistic analysis is data on the characters, or traits, of the organisms in which we are interested.
Detailed explanation-3: -Cladistic analysis considers derived characters, which are evolutionary innovations. If a specific derived character is present in one species but absent I other species, biologists infer that the species possessing the character evolved second.
Detailed explanation-4: -In cladistics, the sharing of derived traits is the most important evidence for evolutionary relationships. Organisms with the same derived traits (such as feathers) are grouped in the same clade. A derived trait is not necessarily an entirely new trait. More often it is a modified form of an ancestral trait.