Illustrate formation of a species with the help of an example where individual are very different from each other and are capable of reproducing among themselves
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There is a population of red beetles living in a mountain area covered with green bushes. Various sub-population in the large-population exists in the neighbourhood. Individuals of a sub-population reproduce sexually among themselves and numerous variations accumulate in these sub-populations of red beetles.
There may be some reproduction among these sub-populations. If a beetle from one sub-population strays into other’s area and some individuals from one sub-population may be carried by predators to the area of other sub-population, then random reproduction takes place. It may lead to migration of genes from one sub-population to other.
If the sub-populations are isolated due to the presence of river between them:
(i) Variation will accumulate in isolated sub-population.
(ii) Over a period of generation, the sub-populations would get very different from each other due to the processes of genetic drift and natural selection and they will not be able to reproduce themselves.
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There may be some reproduction among these sub-populations. If a beetle from one sub-population strays into other’s area and some individuals from one sub-population may be carried by predators to the area of other sub-population, then random reproduction takes place. It may lead to migration of genes from one sub-population to other.
If the sub-populations are isolated due to the presence of river between them:
(i) Variation will accumulate in isolated sub-population.
(ii) Over a period of generation, the sub-populations would get very different from each other due to the processes of genetic drift and natural selection and they will not be able to reproduce themselves.
don't forget to mark as brainliest. .
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