NounSingular species Plural species species (plural species)
From Wiktionary under the GNU Free Documentation License. There are many definitions of what kind of unit a species is (or should be). A common definition is that of a group of organisms capable of interbreeding and producing fertile offspring of both genders, and separated from other such groups with which interbreeding does not (normally) happen. Other definitions may focus on similarity of DNA or morphology. Some species are further subdivided into subspecies, and here also there is no close agreement on the criteria to be used. Biologists' working definitionA usable definition of the word "species" and reliable methods of identifying particular species is essential for stating and testing biological theories and for measuring biodiversity. Traditionally, multiple examples of a proposed species must be studied for unifying characters before it can be regarded as a species. It is generally difficult to give precise taxonomic rankings to extinct species known only from fossils. Some biologists may view species as statistical phenomena, as opposed to the traditional idea, with a species seen as a class of organisms. In that case, a species is defined as a separately evolving lineage that forms a single gene pool. Although properties such as DNA-sequences and morphology are used to help separate closely-related lineages, this definition has fuzzy boundaries. However, the exact definition of the term "species" is still controversial, particularly in prokaryotes, and this is called the species problem. Biologists have proposed a range of more precise definitions, but the definition used is a pragmatic choice that depends on the particularities of the species concerned. From Wikipedia under the
GNU Free Documentation License What species is a good example to show creationists how evolution occurs? Q. I mean, a species where lot s of fossil evidence has been discovered showing how they have evolved over the ages and a trail of DNA which shows an example where the evolution of one species has branched and become several species. You know, an example of evolution that can only be denied by the certifiably insane. Asked by Desiree - Wed Jul 15 00:44:05 2009 - - 24 Answers - 0 Comments A. Mankind itself a great example of evolution. We have mines full of fossil evidence of our own evolution, and a completely sequenced genome. We've pinpointed how our population has evolved over at least the last fifty thousand years, and realistically over the last hundred thousand (since we can tell you when both Mitochondrial Eve and our Y Adam lived). If you want to show divergent evolution in action, and don't want to bring up the word Darwin (as in Darwin's finches, which we have tons of data on), then you can look at the ensatina eschscholtzil. The ensatina is represented by half a dozen or so sub-species ringing a mountain range with each species sitting in a row with the others. Each sub-species is able to interbreed with… [cont.] Answered by AndiGravity - Wed Jul 15 01:14:01 2009 Which species of clownfish is the one that is black and white? Do they start out as orange? Q. Which species of clownfish is the one that is black and white? Do they start out as orange and then turn black and white as they age? Asked by Luconi1 - Mon Oct 12 14:51:03 2009 - - 2 Answers - 0 Comments A. There is a black and white form of the Common Clownfish (Amphiprion ocellaris) and the Black or Clarkii clownfish (Amphiprion clarkii). The former are simply a colour variation of the same species. Young specimens tend to be more of a darkish-red colour and turn black as they mature. Answered by Pleccy - Mon Oct 12 14:57:49 2009 How many species are on earth this year?
Q. It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represetn the number of species living last year, how many species are on Earth this year? Asked by baby lola - Wed May 30 14:39:07 2007 - - 8 Answers - 0 Comments A. Described: 1.0-1.5 million (often quoted number: ~ 1.4 million species described, most of which are insects, particularly beetles. Estimates range from: 4-40 (or up to 100) million, depending upon the method used for estimates. We are sure that we do not know how many species are present on Earth: everytime that someone starts to study tropical insects, they find hundreds and hundreds of non-described species. With mammals and birds, however, it rarely occurs that a not yet described species is discovered; butterflies are also rather well known, as clear by the fact that rarely new species are discovered. Last year, for instance, a 'new' mammal (Laonastes aenigmamus) was described (only known from markets in Laos, sold as food, never… [cont.] Answered by TUBA - Wed May 30 14:45:23 2007 From Yahoo Answer Search: "Species" Racing to save Earth's most endangered species
msnbc.com The affliction isn'ta disease, but rather a crisis of endangerment that threatens to wipe out many of the world's animal species forever. ... Voices from Hopenhagen: Leda Huta Treehugger all 2 news articles » 8 new moth species found
Honolulu Advertiser Researchers from the University of Hawaii have discovered eight new species of Hyposmocoma moths on three islands in the Papahanaumokuakea Marine National ... UH researchers discover 8 moth species in Northwestern Hawaiian Islands Honolulu Star-Bulletin all 7 news articles » Eye on the earth
Washington Post Sarah Gattiker stores the 24200th species of seed in the vault at Kew's Millennium Seed Bank in England, which now holds 10 percent of the world's wild ... From Google News Search: "Species" vaejovis species 7 jpg
481px x 640px | 194.00kB [source page] Found close to La Gloria Veracruz Mexico | 0 comments Vaejovis species This scorpion in the above photo was found under a stone on the lava field close to La Gloria Veracruz together with another scorpion left and right vaejovis species 2 jpg
483px x 640px | 171.40kB [source page] day As you can see in the above photo this scorpion species matches the color of the ground very closely I looked under another stone nearby and found another scorpion Scorpion probably Vaejovis species Esme looked under a stone as well and almost overlooked the third scorpion of that day which was easy to do because it was very small From Yahoo Image Search: "Species" OneRiot.com - Kilimanjaro Ice Peaks an Endangered Species
unknown ue, 03 Nov 2009 02:15:33 GM Story highlights (CNN) -- The ice and snow that cap majestic Mount Kilimanjaro in Tanzania are vanishing before our eyes. If current conditions... Science Centric | News | Colour differences within and between ...
unknown Mon, 26 Oct 2009 16:31:01 GM Going a step further, they showed that it is not just the same gene that contributes to colour differences within and between . species. , but also the same genetic changes within this gene. Currently, the team is trying to pinpoint the ... How Creationist 'Origin' Distorts Darwin - God & Country (usnews.com)
unknown Fri, 30 Oct 2009 19:41:01 GM In this post, Eugenie C. Scott, executive director of the National Center for Science Education, critiques creationist Ray Comfort's new, antievolution version of Charles Darwin's On the Origin of . Species. . The NCSE is the leading group ... From Google Blog Search: "Species" |






