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What are the 5 species concepts?
Biological species concept, phenetic species concept, reproductive competition species concept, evolutionary species concept, and the recognition species concept.
What are the differences between the morphological species concept biological species concept and phylogenetic species concept?
The morphological species concept differentiates species by their physical traits, basically. The biological species concept defines a species as generally organisms that breed with others of the same species; rather a genetic isolation concept. The phylogenetic concept is based on evolutionary relationships and is the concept used by cladists.
Which term applies to a period in evolutionary history when a species show little or no change?
The term that applies to a period in evolutionary history when a species shows little or no change is "stasis." This concept suggests that species can remain relatively unchanged for long periods, often interrupted by brief episodes of rapid evolutionary change, as described by the theory of punctuated equilibrium.
What is the potential to interbreed in the evolutionary species concept?
Means a species always has that potential to breed, one with another. Still, different populations of that species may be too geographically divided to actually interbreed.
What is the evolutionary ladder in order?
The concept of an "evolutionary ladder" or linear progression in evolution is outdated. Evolution is better understood as a branching tree where different species evolve in response to their environments, rather than progressing towards a single goal. Each species is adapted to its specific niche, and there is no hierarchy in terms of evolutionary advancement.
How can the evolutionary history of a species be displayed?
The evolutionary history of a species is often displayed in a phylogenetic tree. This will clearly show the history of the species, which is also known as phylogeny.
What is branching descent?
The rise of two species from one species in a continuing process that resembles the branching of a tree or bush. This is called phylogenetic evolution and is the main driver of species arising over time.
What does the biogeography or fossils support evolutionary theory?
Biogeography, which studies the distribution of species, supports evolutionary theory by showing patterns of species distribution that align with the idea of common ancestry and evolution. Fossils provide physical evidence of species that have existed in the past, showing transitional forms and demonstrating the gradual changes in organisms over time, supporting the concept of descent with modification proposed by evolutionary theory.
What is the evolutionary ladder?
The concept of an evolutionary ladder is outdated in modern evolutionary theory. Evolution does not follow a linear progression towards complexity or advancement. Instead, it is about adapting to environmental changes over time. Each species is uniquely adapted to its own niche, with no inherent hierarchy.
What is the analogous character definition in biology and how does it relate to the concept of character homology?
In biology, an analogous character is a trait that appears similar in different species but is not inherited from a common ancestor. This concept is important in understanding evolutionary relationships. Character homology, on the other hand, refers to traits that are inherited from a common ancestor. By distinguishing between analogous and homologous characters, scientists can better understand the evolutionary history of different species.
What is punctuated equilimbrium?
Punctuated equilibrium is a theory in evolutionary biology that suggests species will often remain stable for long periods of time (equilibrium), with evolutionary changes occurring rapidly (punctuation) in short bursts when they do happen. This concept contrasts with the traditional view of gradual and continuous evolutionary changes over time.
Did Darwin formulate his concept of evolution by natural selection by reading the writings of Wallace or making observations of many species of a new species?
The later. Darwin's writings, which are documented, preceded Wallace's evolutionary formulations by some time.
