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The biological species concept relies on behavioral data and emphasizes reproductive isolation between groups. The lineage species concept relies on genetic data and emphasizes distinct evolutionary trajectories between groups, which result in distinct lineages (branches on a phylogenetic tree).
The biological species concept defines a species as a group of individuals living in one or more populations that can potentially interbreed to produce healthy, fertile offspring. Other species concepts exist and may be more useful for certain types of organisms.
- Hybridization is known to happen between what are generally accepted to be different species — sometimes this leads to new species, other times som...
- Dogs are currently undergoing speciation. However, because they have only recently have split into many breeds, it will take much more time for the...
- They are constantly influenced by variable factors of their environment which may cause more changes in their karyotype. Moreover, most plant speci...
- No, because the offspring is able to reproduce which means that the two parents are of the same species. Plus, just because organisms live in diffe...
- There may not be a barrier — I did a brief look online, but didn't find anything relevant and don't know whether anyone has tried making hybrids of...
- Organisms belong to the same species if they can interbreed to produce fertile offspring. Species are separated by prezygotic and postzygotic barri...
- All domestic dogs evolved from the grey wolf species. Australian dogs were brought to Australia by humans. African dogs were brought to Africa by h...
- Speciation in plants may happen faster just like genetical engineering is much easier to conduct in plants. Plants are polyploid but can reproduce...
- Allopatric? But they eventually can swim apart and change depths?
- The biggest factor is with the rate of creating offspring. The shorter the time between generations the faster that speciation can occur.
Understanding Evolution - Your one-stop source for ...
1 de dic. de 2007 · According to various authors, species are one of the fundamental units of biology, making them comparable in importance to genes, cells, and organisms, some of the fundamental units at lower levels of biological organization (e.g., Mayr, 1982; see also de Queiroz, 2005a ).
- Kevin De Queiroz
- 2007
A biological species is a group of organisms that can reproduce with one another in nature and produce fertile offspring. Species are characterized by the fact...
A species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring.
1 de ago. de 2005 · The biological species concept of Dobzhansky (1937) and Mayr (1942) defines species based on their ability to interbreed: species are considered as “natural” entities distinguishable from other species by the criterion of reproductive isolation and not overall phenotypic similarity.
