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What evolves to become the ancestor of all four limbed animals?
All four-limbed animals belong to the clade of Tetrapoda. The clade of Tetrapoda is defined as the first basal four-limbed animals and all their descendants, extant and extinct. The clade immediately superior (ancestral) to that is the clade of Teleostomi, which contains all jawed vertebrates, including the tetrapods, bony fish, and the extinct lineage of acanthodian fish.
What is a group of species that includes a single common ancestor and all descendents?
Unless life evolved multiple times on Earth all species share a common ancestor with each other. The list is for all practical purposes limitless. Humans and wolves Guinee Pigs and Wales Cock Roaches and Mice and so on.....
What are clades A clade is a group of organisms consisting of a common ancestor and all its descendants But doesn't every living thing have a common ancestor Please help Thanks?
Yes, all living things are just groups of organisms consisting of common ancestors and all their decendant's. Clades is just a word that means a group of organisms.
Do protists have cell walls?
There is no longer a Kingdom of Protists. They are not a monophyletic group (clade). So, the answer is some do some don't. Algae (a type of photosynthetic protist) tend to have a cell wall. Protozoa (the animal like protists) do not. Most single cell protozoa have a pellicle to protect the cell.
4 points to Darwins theory of evolution?
I presume the questioner requires 4 points of information about evolution.Four brief points are;1. Evolution is driven by natural selection2. The base unit of variation is the gene3. Charles Darwin was the original propounder of evolution4. Comparative anatomy and the fossil record can give clues to the evolutionary of today's extant organismsFour points is scarcely enough, so below is a little more background.Charles Darwin formulated the theory of evolution, suggesting natural selection as its driver. He delineated his ideas in On the Origin of Species in 1859.These days the theory of evolution gleans insight into the evolution of species by examining fossils, dating fossils, comparing anatomies and comparing nucleic acid sequences.The Theory of Evolution has managed to get this far in tracing the history of life.Life started in the ocean in the form of the simplest single cells. A likely theory is life started around hydrothermal vents. But whatever the abiogenetic origin of life, as soon as it could be defined as 'life' it began to evolve by nucleic acid mistakes in replication and mutations as such.Eukaryotic life branched from the main clade of life billions of years after the first life.The earliest animals were jellyfish and worms and sponges. Note that the sponge species today are not the same as those of the Precambrian Era. That is not how evolution works. The following illustrates, as a diversion, common misconceptions about evolution;Humans evolved FROM chimpanzeesThis is an incorrect statement. Chimpanzees are extant. Humans are extant. It was a human-chimpanzee common ancestor a couple of million years ago that humans and chimpanzees evolved FROM. It is due to the recentness in time from the divergence from the common ancestor of human and chimpanzee that the two are so anatomically and genetically similar.Thus, in the case of sponges - those sponges extant today are not the original sponges of the world. Sponges today evolved from the same common ancestor as humans, but this common ancestor was billions of years ago. This great time span has given time for animals to diversify and become more complex, explaining the complexity and vast phenotypic differences between sponges and humans. Sponges exist today as the spongeform (which was/is so simple that it could develop first of all among the animals) has been conserved throughout time (since their common ancestor), while the other offbranches - those that may have lead to echinoderms or annelids or sea squirts- changed within their own clades and since they were more complex than sponges, develped later.All life has a common ancestry. There was once a bacteria-archaebacteria-eukarya common ancestor. That was the first cell or couple of cells of all life. Evolution works by common ancestry. (We can trace this by modern phylogeny and taxonomy, grouping everything into their own groups called monophylies).Finally, a point on complexity. Obviously things have to start out simple and end up complex, or to put it better, to gain greater complexity as time goes on. But evolution's 'goal' is not to gain complexity. Evolution works by natural selection. Selction selects those characterists of organisms that CAN SURVIVE. Simple sponges can survive just as well as complex mammals or insects. So selection allows them to continue to exist.Evolution does not seek intelligence either. Intelligent organisms can simply survive a little better than a lot of other things. Intelligence is simply an attribute that allows organisms that acquire it to survive being weeded out by selection.In short evolution has no goal at all, which is why 'goal' is in inverted commas above.Still, admiring all species that survive today, that selection allows to survive because they CAN SURVIVE, one can still identify all species' beauty; Darwin's 'forms most beautiful'.
What animal group did the spinosaurus belong to?
Spinosaurus was a genus in the family Spinosauridae. Spinosauridae belonged to the clades, in order from smallest to largest, Megalosauria, Orionides, Tetanurae, Averostra, and Neotheropoda. Neotheropoda was the clade that included most species belonging to the Theropoda clade, which in turn belonged to the Eusaurischia clade of the order Saurischia, also known as the lizard hipped dinosaurs. Saurischia belonged to the Dinosauria superorder, and Dinosauria belonged to the Archosauria clade of the Crurotarsi clade. In turn, Crurotarsi belonged to the class Reptilia. Reptiles belong to the subphylum Chordata, phylum vertebrata, and finally the kingdom Animalia.
The taxonomy group of sampaguita?
The scientific classification of sampaguita is: Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Asterids Order: Gentianales Family: Rubiaceae Genus: Jasminum Species: Jasminum sambac
What is an avialan?
An avialan is an animal belonging to the clade Avialae, including all birds, and the airborne dinosaurs from whom they evolved.
What are minke whales?
They are a name given to two species of marine mammal belonging to a clade within the suborder of baleen whales. 2 sub species includes Common Minke and Antarctic minke whales. The common is least concerned but Antarctic minke is Data Deficient but suspected to be concerned.
Are birds a population or a species?
"Birds" are a clade; a group of related species. In particular, they're members of the class Aves.
What subgroup class where the velociraptors in?
Velociraptor was technically a reptile, though its traits were not very reptilian. It was a dinosaur belonging to the clade Theropoda and the family Dromaeosauridae.
What is an apomorphy?
An apomorphy is a derived characteristic of a clade - any feature which is unique to a base species and its descendants.
Do panda bears come from raccoons?
Giant Pandas have the same ancestor as Raccoons, but are in the Bear Clade. Lesser Pandas are in the Raccoon Clade, and all Bears, Raccoons, and Dogs have a common ancestor. Giant Pandas are closely related to Raccoons, more related than any other species in the Bear Clade.
Does lizard have legs?
Most lizards have four legs, but there are a number of species of legless lizards, which are a separate clade from snakes.
What is the complete classification of a triceratop?
The genus is Triceratops, and there were two species, Triceratops horridus and Triceratops prorsus. The genus Triceratops belongs to the tribe Triceratopsini, which belongs to the family Ceratopsidae. The family Ceratopsidae belongs to the suborder Ceratopsia. All horned, herbivorous dinosaurs belonged to Ceratopsia. Ceratopsia was a division of the clade Marginocephalia, which also includes the pachycephalosaurs. Marginocephalia belongs to the order Ornithischia, which includes all bird-hipped dinosaurs. Ornithischia belongs to the clade Dinosauria. In order from smallest group to largest group, Dinosauria belongs to Dinosauriformes, Dinosauromorpha, Ornithodira, Archosauria, Crurotarsi, Archosauriformes, Archosauromorpha, Sauria, Neodiapsida, Diapsida, Romeriida, Eureptilia, and finally Sauropsida. Sauropsida is a clade belonging to the class Reptilia, which belongs to the clade Amniota, then the clade Tetrapoda, Teleostomi, Eugnathostomata, and then Gnathostomata. Gnathostomata belongs to the subphylum Vertebrata, the phylum Chordata, and the kingdom Animalia.
If you have a chart that illustrates a series of species with their common ancestor?
Cladogram-In a cladogram a, clade is an evolutionary branch that includes a common ancestor together with all its descendant species.
What is the difference between a Clade and a taxon?
A clade is a group of organisms that includes an ancestor and all of its descendants, emphasizing evolutionary relationships. A taxon, on the other hand, is a group of organisms that are classified together at a particular level, such as species, genus, family, etc. Clade is a more specific concept that relates to evolutionary history, while taxon is a broader term used in classification.
