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What do the structures that result from convergent evolution indicate about organisms?
Wiki User
∙ 11y ago
The structure that result from convergent evolution indicates that organisms have to be reclassified because when scientists compared nucleic acid from the cells of the animals and they found many diffrences in them.
Wiki User
∙ 11y ago
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What is struggle to survive in evolution?
The "struggle to survive", "survival of the fittest" and "natural selection" are all phrases to indicate the main guiding mechanism of evolution: differential reproductive success.
What cell carries out the special job?
In multicellular organisms every cell type has its own special set of jobs, but you did not indicate the job you are interested in. In unicellular organisms the cell has to do every job.
What does a negative result for a spore stain indicate about the organism?
A negative result for the spores stain indicate that the gram-negative organism is present. A positive result for a spore stain indicates that a gram positive organism is present.
How do studies in biogeograpy and comparative anatomy contradict the idea that species have remained unchanged since the time of creation?
AnswerBiogeographyBiogeography is the study of the the distribution of life forms over geographical areas. It provides significant inferential evidence for evolution and, most importantly, testable predictions about evolution.With special creation, we should find species distributed in an effectively random geographic manner, with closely related species no more likely to be located close to each other than not, but merely existing where climate and other environmental factors favoured their survival. It would make as much if not more sense for them to exist wherever an environment could support them, as opposed to being distributed according to their apparent relationship to other life forms. The fact that this is not the case contradicts the claims of creationists.Comparative anatomyOne of the strongest forms of evidence against special creation is comparative anatomy. Organisms with similar anatomical features are assumed to be relatively closely related evolutionarily, and they are assumed to share a common ancestor. Common ancestry is a paradox if species have remained unchanged since the time of creation.Some organisms have homologous anatomical structures that are very similar in embryological development and form, but very different in function. A good example of homologous structures is the forelimb of mammals. When examined closely, the forelimbs of humans, whales, dogs, and bats are all very similar in structure - each possesses the same number of bones, arranged in almost the same way. By comparing the anatomy of these organisms, scientists have determined that they share a common evolutionary ancestor and in an evolutionary sense, they are relatively closely related. Their dramatic differences in function is clear evidence of adaptation through continuing evolution, not of special creation.Other organisms have analogous anatomical structures that function in very similar ways, but are morphologically and developmentally very different. For example, the wings of birds and dragonflies both serve the same function, but the anatomy of the wings are very different. Since these structures are so different, even though they have the same function, they do not indicate an evolutionary relationship nor that two species share a common ancestor.
What were the first know living organisms on earth and when did they appear?
The first known were bacteria, and they date back to 3.5 to 4 billion years ago.
What is an explanation of why bird wings and reptile forelegs are evidence of evolution?
Homologous structures indicate a common ancestor
What do similarities between amino acid sequences indicate?
Similar amino acid sequences can indicate similar protein structure and function. Hydrophobic residues will orient the same way in solution as will polar residues. Charged amino acids are commonly found within or near the active sites enzymes. Similar amino acid sequence can also indicate a similar evolutionary origin known as convergent evolution. This is the same for unique proteins that evolved from a common ancestral protein which is known as divergent evolution.
What is placed between a molecule's resonance structures to indicate resonance?
Usually two way arrows are placed between a molecule's resonance structures to indicate resonance
What is placed Between a molecule resonance structures to indicate resonance?
Usually two way arrows are placed between a molecule's resonance structures to indicate resonance
What do homologous structures indicate?
that we share a common ancestor
What does this indicate about the evolution of vertebrates?
All vertebrates evolved from fish.
How are chemical homologies useful in classification?
The more similar (or homologous) some chemical structures are, the more likely they are closely related. Conversely, greatly dissimilar structures indicate divergence a long time ago. If the only other clues about an organism are not specific enough, the chemical structures - and thereby other organisms - it is related to can be discerned by such a comparison.
How does homologous structures and analogous structures provide evidence that evolution has occurred?
Structures which are apparently different and performing different functions but their basic structure is similar are called homologous structures and indicate common ancestry eg. fore limbs of bat , whale , horse dog and man apparently different but are made up of humerus , radius , ulna , carpel , metacarpals and phalanges .
How do analogous structures support evolution?
Since the wings of insects and birds have different structures (or different designs) but perform similar functions, they are analogous organs. Now, since the analogous organs have different basic design, so they do not indicate a common ancestor for the organism. The analogous organs provide evidence for the evolution in another way. The presence of analogous organs indicates that even the organisms having organs with different structures can adapt to perform similar functions for their survival under hostile environmental conditions. Thus, the presence of analogous organs in different animals provide evidence for evolution by telling us that though they are not derived from common ancestors, they can still evolve to perform similar functions to survive, flourish and keep on evolving in the prevailing environment. The analogous organs actually provide a mechanism for evolution.
What type of plate boundary forms earthquake?
earthquakes indicate both convergent,divergent and transform fault plate boundaries
How can geologists infer from sedimentary rocks what the surface conditions of Earth's past were like?
The inferences are made primarily from the fossils contained within the rock. The surface conditions drive the evolution of organisms as they adapt to those conditions. The type of organisms found in the fossil record therefore indicate the climatic and environmental conditions that existed at the time of their fossilization.
What do the levels of classification indicate about the relationship of organisms?
The more classification levels that two organisms share, the more characteristics they have in common.
