Question

An explanation about the evolution of species is given on chapter 2

Answer 1

Answer:

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Explanation:

• Evolution is a process which occurs due the errors in DNA copying.
• Evolution can take place through natural selection, Genetic drift or by Geological isolation.
• Due to errors in DNA copying, some variations occur in organisms.
• There variations can be favorable or unfavorable to an organism.
• Those variations which are favorable to the organisms survive where as the unfavorable ones perish.
• These variations which survive are said to be naturally selected.
• Genetic drift is a random change in the nitch (habitat), which drastically alters the flow of genes within the species.
• In both the cases, variations result in evolution of organisms.

Hope this helps you ....... :)