Darwin's Contributions
Darwin used this phrase to describe his view of life
What is "descent with modification"?
This accounts for the unity and diversity of all species on Earth.
What is evolution?
Refers to a process by which a species splits into 2 or more species
What is speciation?
RNA molecules that can catalyze many different reactions
What are ribozymes?
Earth formed ___ billion years ago.
What is 4.6?
"Members of a population often vary in their inherited traits" is one of two ___ made by Darwin?
What are observations?
Natural selection, genetic drift, and gene flow are all causes for this type of evolution.
What is microevolution?
Concept that defines a species by the way that it looks
What is the morphological species concept?
The rapid evolution of diversely adapted species from a common ancestor.
What is adaptive radiation?
Fossils from this organism were thought to be the first evidence of life on Earth?
What are stromatilites
This phenomenon named by Darwin increases the frequency of adaptations that are favorable in an environment.
What is natural selection?
This model indicates that frequencies in a population will remain constant from generation to generation.
What is Hardy-Weinberg Equilibrium?
This type of speciation occurs when gene flow in a population is disrupted by geographic barriers.
What is allopatric speciation?
An evolutionary change in the rate or timing of developmental events.
What is heterochrony?
From 2.7 to 2.4 billion years ago, ocean was absorbed in the ocean to create this compound.
What is iron oxide?
Darwin was the first to describe life using this type of structure in which all species branch out from a common trunk.
What is phylogenetic tree?
These are the two types of genetic drift.
What are the founder effect and the bottleneck effect?
According to the biological species concept, organisms of the same species are able to ___.
What is interbreed?
Structures that evolve in one context but become co-opted for a different function
What are exaptations?
These organisms were thought to be the first eukaryotes
What are red algae?
Much of Darwin's ideas came from analyzing difference between the various types of these species on the Galapagos Islands?
What are finches?
This type of evolution is shows an improvement in the match between organisms and their environment.
What is adaptive evolution?
Concept that defines a species based on its ecological niche
What is the ecological species concept?
Two chromosome sets that are all derived from a single species
What is autopolyploid?
This theory explains the introduction of chloroplasts and mitochondria into early cells.
What is the endosymbiont theory?