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What are two types of evidence that suggest that evolution has occurred?
The two types are Dna, and fossils
Who explained that evolution might have occurred in nature from simple to complex form and origin of species by natural selection?
Charles Robert Darwin, of course!
How would vestigial traits be explained if evolution occurred via inheritance of acquired characters as proposed by Lamarck?
as a change in an individual's phenotype in response to an environmental challenge
Why is DNA the weakest evidence of evolution?
Actually, it is the strongest evidence for evolution. Without one fossil we would know from the DNA evidence that evolution has occurred and is occurring. It is in the DNA of organisms that we see the strongest evidence for common ancestry. The products of those genes are sometimes highly conserved down the ages. Ribosomes, the workbenches on which proteins are made, differ hardly at at between you and pets.
When did the endosymbiotic theory happen?
The first eukaryotic organisms were formed by the process known as endosymbiosis whereby once independent microorganisms entered cells of other independent microorganisms and established symbiotic relationships with each other.
What step caused an aerobic atmosphere during the history of earth?
The evolution of photosynthetic organisms, such as cyanobacteria, led to the buildup of oxygen in Earth's atmosphere through a process called the Great Oxidation Event. This occurred around 2.4 billion years ago, gradually transforming the atmosphere from anaerobic to aerobic.
When did scientists believe that chemical evolution occurred?
Scientists have believed that chemical evolution occurred about 4 billion years ago, shortly after the formation of the Earth. This process is thought to have led to the development of the first life forms on our planet.
Fossils provide direct evdence blank that has occurred on earth?
evolution
When did scientist believe chemical evolution occur?
Scientists believe that chemical evolution occurred around 3.5 billion years ago.
What are types of evidence that suggest that evolution has occurred?
The two types are Dna, and fossils
What major change occurred in the atmosphere during the precambrian?
During the Precambrian period, significant changes occurred in the atmosphere. Early in the period, the atmosphere was primarily composed of gases like methane, ammonia, and carbon dioxide with little to no oxygen. But over time, due to the emergence of photosynthetic bacteria, oxygen levels began to rise, leading to the development of an oxygen-rich atmosphere by the end of the Precambrian. This rise in oxygen was a major milestone in Earth's history, paving the way for the evolution of complex multicellular life forms.
Is the troposphere the layer of the atmosphere where rain and snow occurred?
Yes.
During the evolution of protists it is hypothesized that what occurred?
B and C only for plato users
Which significant event in evolution occurred during the Carboniferous period?
Reptiles evolved from amphibians
What two types of evidence that suggest that evolution has occurred?
The two types are Dna, and fossils
What are two types of evidence that suggest that evolution has occurred?
The two types are Dna, and fossils
What question did both Lamarck and Darwin try to answer with their theories of evolution?
What is the mechanism that causes evolution. Both knew evolution occurred and occurs but did not know how or why. Lamark's " desire to evolve " and " acquired characteristics " failed to explain evolution. Darwin's theory of evolution by natural selection was the better explanation.
