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What happened during evolution that led to the appearance of jaws and skulls in chordates?
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The elaboration of a notochord and a dorsal nerve chord the key developmental event that marks the evolution of the chordates is referred to as?
The elaboration of a notochord and a dorsal nerve chord the key developmental event that marks the evolution of the chordates is referred to as neurulation. The hollow crater formed during gastrulation is known as the archenteron.
Did evolution play during Cenozoic era?
Of course. Evolution has happened ever since life first came into existence on Earth, some 3.5 billion years ago.
Do all animals have a tail?
Yes, all chordates have a tail sometime during their development, although its not necessarily seen when the animal is adult. In many animals its a vestigial structure
Who was John Scopes?
John Scopes was a teacher known for being tried for teaching evolution to his students. During his trial, known as the Scopes trial, he contended that evolution should be allowed to be taught, but was ultimately found guilty.
Is it true that acquired characteristics lead to evolution?
Evolution is the change in allele frequency over time in a population of organisms. Alleles are different molecular forms of the same gene and when their frequency changes in a population it indicates " hard " inheritance has taken place; the only type of inheritance that leads to evolution. Building bigger muscles during you lifetime can not pass the bigger muscles on to your progeny, thus mo evolution in any population.
The elaboration of a notochord and a dorsal nerve chord the key developmental event that marks the evolution of the chordates is referred to as?
The elaboration of a notochord and a dorsal nerve chord the key developmental event that marks the evolution of the chordates is referred to as neurulation. The hollow crater formed during gastrulation is known as the archenteron.
Example of macroecolution?
An example of macro-evolution is the appearance of feathers during the evolution of birds from theropod dinosaurs.
What happened during the Russian sport evolution?
Russian sport evoulation should be killed
What is a characteristic shared by all chordates the phylum in which humans are classified?
One characteristic shared by all chordates is the presence of a notochord, a flexible rod that provides structural support. Humans, being classified under the phylum Chordata, possess a notochord during their embryonic development that eventually develops into the spinal column.
Did evolution play during Cenozoic era?
Of course. Evolution has happened ever since life first came into existence on Earth, some 3.5 billion years ago.
A pattern of evolution in which most change in appearance takes place during a relatively short period of time fits the model of speciation?
Punctuated equilibrium.
What are three structures that all chordates have in common?
Chordates are animals that comprise the vertebrates. The three structures that are present during their development are the notochord, a tubular nerve cord and gill slits leading into the pharynx.
What happened during the 1980s and 1990s?
During the 1980s and the 1990s, there was a savings and loans crisis in the United States and grunge and techno music made an appearance. There was also a word debt crisis at this time.
Do chromosomes have same appearance during a cell's life?
No, their appearance remain changing during cell's life.
What is mirco evolution?
micro evolution refers as evolution occurred during biochemical synthesis in primitive earth as for evolution of essential micro and bio molecules.
Do Pokemon stay in mega evolution?
No, Mega Evolution can only be used during a battle.
Is baby born with a tailbone?
Yes, one of the key characteristics of chordates is that they have a post anal tail, including during fetal development.
