wat r d currently accepted meanings for d word"species" in biology?

Answer 1

Species is the fundamental or rather the basic unit of classification of organisms. According to classical defination
Species is a group of morphologically similar organisms who can interbreed among themselves producing fully 100% fertile ofsprings. Two different species cannot interbreed among themselves due to reproductive barriers, but there are exceptions. When two different species breed then their hybrids are generally sterile or least fertile, so that the succession of the hybrid generation cannot proceed.
Examples of the exception:
1. Donkey + Horse = Mule
(Male) (Female) ( Sterile)

2. Lion + Tiger = Liger
(Male) (Female) ( Almost sterile)

3. Tiger + Lion = Tigon
(Male) (Female) (Almost sterile)

4. Zebra + Horse = Zorse
(Male) (Female) (Fertile but power of fertility is less than their parents).

These exception are generally seen under captive breeding, but in nature it is rarely found.

Binomial Classification:
In scientific classification, a species is assigned a two-part name, treated as Latin. The genus is listed first (with its leading letter capitalized), followed by a second term: for example, gray wolves belong to the species Canis lupus, coyotes to Canis latrans, golden jackals to Canis aureus, etc., and all of those belong to the genus Canis (which also contains many other species). The name of the species is the whole binomial, not just the second term (which may be called specific name for animals).
Books and articles sometimes intentionally do not identify species fully and use the abbreviation "sp." in the singular or "spp." in the plural in place of the specific epithet: for example, Canis sp. This commonly occurs in the following types of situation:
The authors are confident that some individuals belong to a particular genus but are not sure to which exact species they belong. This is particularly common in paleontology.
The authors use the "spp." as a short way of saying that something applies to many species within a genus, but do not wish to say that it applies to all species within that genus. If scientists mean that something applies to all species with a genus, they use the genus name without the specific epithet.
In books and articles that use the Latin alphabet, genus and species names are usually printed in italics. If using "sp." and "spp.," these should not be italicized.
The binomial naming convention, later formalized in the biological codes of nomenclature, was first used by Leonhart Fuchs and introduced as the standard by Carolus Linnaeus in is 1758 classical work Systema Naturae 10th edition. As a result, it is sometimes called the "binomial nomenclature." At this time, the chief biological theory was that species represented independent acts of creation by God and were therefore considered objectively real and immutable.

Species and the various types of species:
The question of how best to define "species" is one that has occupied biologists for centuries, and the debate itself has become known as the species problem. One definition that is widely used is that a species is a group of actually or potentially interbreeding populations that are reproductively isolated from other such groups.

The definition of a species given above is derived from the behavioral biologist Ernst Mayr, and is somewhat idealistic . Since it assumes sexual reproduction, it leaves the term undefined for a large class of organisms that reproduce asexually. Biologists frequently do not know whether two morphologically similar groups of organisms are "potentially" capable of interbreeding. Further, there is considerable variation in the degree to which hybridization may succeed under natural and experimental conditions, or even in the degree to which some organisms use sexual reproduction between individuals to breed. Consequently, several lines of thought in the definition of species exist:

Typological species :
A group of organisms in which individuals are members of the species if they sufficiently conform to certain fixed properties. The clusters of variations or phenotypes within specimens (i.e. longer and shorter tails) would differentiate the species. This method was used as a "classical" method of determining species, such as with Linnaeus early in evolutionary theory. However, we now know that different phenotypes do not always constitute different species (e.g.: a 4-winged Drosophila born to a 2-winged mother is not a different species). Species named in this manner are called morphospecies.

Morphological species:
A population or group of populations that differs morphologically from other populations. For example, we can distinguish between a chicken and a duck because they have different shaped bills and the duck has webbed feet. Species have been defined in this way since well before the beginning of recorded history. This species concept is much criticised because more recent genetic data reveal that genetically distinct populations may look very similar and, contrarily, large morphological differences sometimes exist between very closely-related populations. Nonetheless, most species known have been described solely from morphology.

Biological / Isolation species:
A set of actually or potentially interbreeding populations. This is generally a useful formulation for scientists working with living examples of the higher taxa like mammals, fish, and birds, but meaningless for organisms that do not reproduce sexually. It does not distinguish between the theoretical possibility of interbreeding and the actual likelihood of gene flow between populations and is thus impractical in instances of allopatric (geographically isolated) populations. The results of breeding experiments done in artificial conditions may or may not reflect what would happen if the same organisms encountered each other in the wild, making it difficult to gauge whether or not the results of such experiments are meaningful in reference to natural populations.

Biological / reproductive species:
Two organisms that are able to reproduce naturally to produce fertile offspring. Organisms that can reproduce to almost always make infertile hybrids, such as a mule or hinny, are not considered to be the same species.

Mate-recognition species:
A group of organisms that are known to recognize one another as potential mates. Like the isolation species concept above, it applies only to organisms that reproduce sexually. Unlike the isolation species concept, it focuses specifically on pre-mating reproductive isolation.

Phylogenetic (Cladistic)/ Evolutionary / Darwinian species:
A group of organisms that shares an ancestor; a lineage that maintains its integrity with respect to other lineages through both time and space. At some point in the progress of such a group, members may diverge from one another: when such a divergence becomes sufficiently clear, the two populations are regarded as separate species. Subspecies as such are not recognized under this approach; either a population is a phylogenetic species or it is not taxonomically distinguishable.

Ecological species:
A set of organisms adapted to a particular set of resources, called a niche, in the environment. According to this concept, populations form the discrete phenetic clusters that we recognize as species because the ecological and evolutionary processes controlling how resources are divided up tend to produce those clusters

Genetic species:
based on similarity of DNA of individuals or populations. Techniques to compare similarity of DNA include DNA-DNA hybridization, and genetic fingerprinting (or DNA barcoding).

Phenetic species:
based on phenotypes

Recognition species:
based on behavioral interactions

Microspecies :
Species that reproduce without meiosis or fertilization so that each generation is genetically identical to the previous generation. See also apomixis.

Cohesion species :
Most inclusive population of individuals having the potential for phenotypic cohesion through intrinsic cohesion mechanisms. This is an expansion of the mate-recognition species concept to allow for post-mating isolation mechanisms; no matter whether populations can hybridize successfully, they are still distinct cohesion species if the amount of hybridization is insufficient to completely mix their respective gene pools.

Answer 2

Meaning Of The Word Species

Answer 3

Species is the basic and funadamental calssification for a matter or animal and is being calssified as kingdom phylum or pulumna, origin, family, and the it's specie the specie are those of having connections or interaction to the environments that is being attached while the others are their group.: - )

Answer 4

There are many definitions, but essentially a species is the lowest division that is capable of producing fertile offspring.

Kingdom
Phylum
Class
Order
Family
Genus
species (note the s is not capitalized)

Due to the great diversity of life, that definition is far from perfect..but its the best we've got.

Answer 5

group of closely related individuals, who can interbreed among themselves to produce a fertile offspring of their own kind. this is the internationally accepted definition for the term species

Answer 6

I`m sticking with you, I`m made out of glue. What a Liberty! You didn`t come here to be insulted... folk casting aspersions. this must be nipped in the bud. The very idea . We trust you , you are a doctor. Not chatting ,, typing merrily at will. Poor Will!