What convergent evolution means?
In evolutionary biology, convergent evolution is defined as the process whereby distantly related organisms independently evolve similar traits to adapt to similar necessities. VLRs and TCRs/BCRs both serve as antigen receptors, but are evolutionarily unrelated.
What is an example convergent evolution?
Convergent evolution is when different organisms independently evolve similar traits. For example, sharks and dolphins look relatively similar despite being entirely unrelated. Another lineage stayed put in the ocean, undergoing tweaks to become the modern shark.
What is convergent evolution and why does it occur?
Convergent evolution is a process in biology. It occurs when two species from unrelated lines develop the same traits or features. This happens because they live in similar habitats, and have to develop solutions to the same kind of problems. Similarity in traits can occur in two ways.
How is convergent evolution best explained?
Convergent evolution is the process by which two species develop similar features despite not sharing a recent common ancestor. The only requirement is that two species, lacking a common ancestor, undergo independent evolution that results in similar body forms or similar useful traits.
What is convergent evolution quizlet?
Convergent Evolution. The process whereby organisms not closely related, independently evolve similar traits as a result of having to adapt to similar environments or ecological niches.
What is convergent evolution and divergent evolution explain with examples?
Divergent evolution occurs when two separate species evolve differently from a common ancestor. Convergent evolution occurs when species have different ancestral origins but have developed similar features. A good example of convergent evolution is the similarities between the hummingbird and the hummingbird moth.
What is convergent evolution give an example class 12?
Convergent evolution gives rise to analogous structures which have similar function but are different anatomically Examples : Wings of butterfly and wings of birds look alike and perform the same fucntion but are anatomically different having different origin. Attempt giving a clear definition of the term species.
What is convergent evolution Khan Academy?
Instead, some physical similarities are analogous: they evolved independently in different organisms because the organisms lived in similar environments or experienced similar selective pressures. This process is called convergent evolution. (To converge means to come together, like two lines meeting at a point.)
What is divergent evolution?
What Is Divergent Evolution? Divergent evolution occurs when a population of animals or plants is split into two groups by a geographic barrier (for instance, a body of water or a migration to a new area), causing each group to develop different traits under their respective selective pressures and natural selection.
What is the meaning of divergent evolution?
Definition. Divergent evolution represents the evolutionary pattern in which species sharing a common ancestry become more distinct due to differential selection pressure which gradually leads to speciation over an evolutionary time period.
How do convergent and divergent evolution differ quizlet?
Convergent Evolution: The process by which unrelated species become more similar as they adapt to the same kind of environment. Divergent Evolution: The process of two or more related species becoming more and more dissimilar.
Is platypus an example of convergent evolution?
Like eyes, fins and wings, which have evolved independently in a number of different lineages, platypus venom looks to be an example of convergent evolution, says Wesley Warren, a genomicist at Washington University in St Louis, Missouri, who led the study, published in the journal Genome Biology.1
What are convergent traits?
Traits arising through convergent evolution are termed analogous structures, in contrast to homologous (the basis of organization for comparative biology) structures, which have a common origin. An analogy is a trait or an organ that appears similar in two unrelated organisms.
When does convergent evolution occur?
As a rule, convergent evolution occurs when two groups of largely unrelated organisms are exposed to very similar environments and develop similar adaptations to survive. According to Princeton University, the evolution of the wing among bats and birds is convergent, as their last common ancestor was wingless.
What gives evidence for evolution?
Fossils provide evidence of evolution because of the sequential nature in which fossils are found (older on the bottom, and progressively younger as you move up the stack of sedimentary strata).