Evolution over time can follow several different patterns. Factors such as environment and predation pressures can have different effects on the ways in which species exposed to them evolve. shows the three main types of evolution:
divergent, convergent, and parallel evolution
.
What is convergent evolution and divergent evolution?
Convergent Evolution vs.
Divergent evolution: Divergent evolution
occurs when two organisms with a common ancestor end up as different species
. … Convergent evolution: Convergent evolution occurs when two organisms that lack a recent common ancestor end up more and more alike as they adapt to a similar ecological niche.
What is the main difference between the two types of evolution?
The main difference between
parallel and convergent evolution
is that parallel evolution describes the independent evolution of two species, maintaining a same level of similarity whereas convergent evolution describes the origination of analogous traits in distinct species.
What are 2 examples of convergent evolution?
An example of convergent evolution is the
similar nature of the flight/wings of insects, birds, pterosaurs, and bats
. All four serve the same function and are similar in structure, but each evolved independently.
What are the 7 patterns of evolution?
Groups of species undergo various kinds of natural selection and, over time, may engage in several patterns of evolution:
convergent evolution, divergent evolution, parallel evolution, and coevolution
.
What are the three evidences of evolution?
Evidence for evolution:
anatomy, molecular biology, biogeography, fossils, & direct observation
.
Which is an example of convergent evolution?
Convergent evolution is when different organisms independently evolve similar traits. For example,
sharks and dolphins
look relatively similar despite being entirely unrelated.
What’s an example of divergent evolution?
Galapagos finches
are an example of divergent evolution. Through time, the species evolved morphologically different traits. A prototype example of divergent evolution is Galapagos finches. … Thus, they become a different species to their ancestors and what was once one species has diverged into two.
Is convergent evolution rare?
When multiple taxa independently evolved the same trait to cope with the same, or similar, environmental pressures, the trait is likely adaptive in that environment. … As each paper in this issue shows, convergent evolution at the phenotypic level
is rather common
.
Are humans still evolving?
It is selection pressure that drives natural selection (‘survival of the fittest’) and it is how we evolved into the species we are today. … Genetic studies have demonstrated
that humans are still evolving
.
What is an example of convergence?
The definition of convergence refers to two or more things coming together, joining together or evolving into one. An example of convergence is
when a crowd of people all move together into a unified group
. The point of converging; a meeting place. A town at the convergence of two rivers.
Why are sharks and dolphins similar?
Gradually sharks, ichthyosaurs, and dolphins came to look alike
because natural selection favored one particular shape over all others for rapid movement through the seas
. Figure legend: … Both have evolved a shape that moves through water with minimum of resistance, hence their superficial similarity.
What are the 6 patterns of evolution?
- Mass Extinctions.
- Adaptive Radiation.
- Convergent Evolution.
- Coevolution.
- Punctuated Equilibrium.
- Developmental Gene Changes.
What are the 4 principles of evolution?
There are four principles at work in evolution—
variation, inheritance, selection and time
.
Can a cell evolve?
Evolution of cells. … The hypothesis that eukaryotic cells evolved from a symbiotic association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.
What is the weakest evidence for evolution?
Illogical Geology
The Weakest Point in the Evolution Theory.
