Question

Explain the following speciation and natural speciation

Answer 1

Answer:

Explanation:

(a) Speciation. (b) Natural Selection. (a) Speciation: The process by which new species develop from the existing species is known as speciation. ... (b) Natural Selection: the process whereby organisms better adapted to their environment tend to survive and produce more offspring.

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Answer 2

Answer:

Speciation

1. It is an event that splits a population into two independent species which cannot reproduce among them.

2. Process of speciation-Genetic drift: It occurs due to changes in the frequencies of particular genes by chance alone. e.g. If a hurricane strikes the mainland, and bananas with beetle eggs on them are washed away to an island. This is called a genetic drift.

3. Process of speciation - natural selection: These are the variations caused in individuals due to natural selection which lead to the formation of a new species. e.g. If the ecological conditions are slightly different on the island as compared to the mainland, it leads to a change in the morphology and food preferences in the organisms over the course of generations.

4. Process of speciation - splitting of population: A population splits into different sub-populations due to geographical isolation that leads to the formation of a new species.

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