Campbell Biology: chapter 22 Flashcards
Descent with modification? proposing that earths many species are descendants of ancestral species that were different from the present day species.
The _______of evolutionary change is revealed by data from a range of scientific disciplines, including biology, physics and chemistry. These data are facts- observations about the natural world.
The _______ of evolution consists of mechanisms that produce the observed pattern of change.
Viewed species as fixed; recognized certain affinities among organism. Life forms could be arrange on a latter.
species where individually created by God an where therefor perfect.
developed the two part format for naming species. with a classification system naming similar species into increasingly general categories.
Similar species are grouped into the same ______. similar genus are grouped into the same________.
New layers of sediment cover older ones and compress them into superimposed layers of rock called ________.
The study of fossils?
The principal that events in the past occurred suddenly and were caused by mechanisms different from those operating in the present.
States that mechanisms of change are constant over time.
The idea that body parts that are used extensively become larger and stronger, while those that are not used deteriorate.
use and disuse; formed by Lamarck
stated that an organism could pass its modifications on to its offspring.
inheritance of acquired characteristics
Inherited characteristics of organisms that enhance their survival and reproduction in specific environments.
A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.
selecting and breeding individuals that have desired traits
similarity resulting from common ancestry
structures that represent variations on a structural theme that was present in their common ancestor.
Remnants of features that served a function in the organisms ancestors. left over structures, marginal if any importance to the organism.
biologists often represent the pattern of descent from common ancestors and the resulting homologies with an __________.
the independent evolution of similar features in different lineages.
________ features share similar function, but not common ancestry.
________ features share common ancestry, but not common function.
the geographic distribution of species.
found no where else in the world.
What are for examples of that support natural selection?
1. drug-resistant pathogens 2. similarities among different organisms (homology) 3. fossils 4.biogeography