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Similar bone structures in species
Analogous selection.
Living conditions such as other similar organisms to an organism in question often results in competition for food, nutrients, and / or shelter. Natural selection is usually a result of this (natural selection is where the strongest survive), leading to evolution and development of the species. The environment, in turn, benefits from natural selection due to the decreased number of organisms draining resources. In essence, it is a cycle, with the living depending on the nonliving / other living, those being depended upon running short, the depending fighting each other, and the depended upon benefiting as a result.
this is because they have a link with early ancestors of similar structure.
The theory of evolution was developed by Charles Darwin. He sailed on the HMAS Beagle to the Galapagos islands. He said that the finches were very similar, but had different beaks. This was probably so they didn't have to compete with other birds for food. They evolved by natural selection. This means that the bird with features best suited to the environment would breed and pass their characteristics on to the next generation. Birds not suited would die. This also happens with bacteria. Bacteria with a natural resistance to antibiotics would survive, breed and pass their genes onto the next generation.
If my memory serves me correct, I'm pretty sure it was at the Galapagos's islands. I remember watching documentaries on him on the History Channel or something similar.
Natural selection
No, the two of them used algebra and probability to model population biology, not natural selection, however similar the two may be.
Alfred Russel Wallace. Google him.
Wallace's contribution was almost similar to what Charles Darwin's theory of evolution is. Is that helpful?
Natural selection and artificial selection both involve an organism's traits being determined by how much they're favored. Then, the organisms with favorable traits pass those traits on to future generations.However, natural selection is caused by survival; the organisms with traits that increase their chances for survival and reproduction pass on their traits. As for artificial selection, humans purposefully decide which traits (like the most colorful one) of an organism to pass on.The similarity of artificial selection and natural selection is that they both can cause changes in the frequency of population.
Artificial selection interested Darwin because it demonstrated that traits could be modified over generations through selective breeding. This process allowed humans to intentionally choose which traits were passed on to offspring, leading Darwin to realize that a similar natural process could occur in nature, driving evolution through natural selection.
Charles Robert Darwin and Alfred Russel Wallace developed similar and almost simultaneous theories of evolution by natural selection.
Both establish that: 1. There are limited reproductive opportunities 2. Only those organisms with "favorable" traits will be allowed to reproduce and pass the traits onto their offspring The difference is that artificial selection involves human intervention
In a sense, one might say that this is the case. But in a more direct sense, natural selection determines which organisms do not get to procreate (as much). Natural selection is therefore more a limiting phenomenon than an enabling one.
Define the term Variation and natural selection how do they work together to help cause evolution
In both processes the favourable characteristics are passes on to the next generation.Both processes eventually form a new species.