Why is geographical distance alone not always enough for forming a new species?
Answer and explanation
Correct answer: Because genetic changes and reproductive isolation may also be needed
Geographical distance can reduce contact and interbreeding, but it does not automatically create a new species. Over generations, separate populations must accumulate heritable genetic differences, and reproductive isolation must prevent successful interbreeding when they meet again. Environmental selection and other evolutionary processes may contribute to this divergence. Therefore option A is correct; the other choices make absolute or scientifically false claims about distance.
Frequently asked questions
What is the correct answer to this question?
Because genetic changes and reproductive isolation may also be needed
Why is this the correct answer?
Geographical distance can reduce contact and interbreeding, but it does not automatically create a new species. Over generations, separate populations must accumulate heritable genetic differences, and reproductive isolation must prevent successful interbreeding when they meet again. Environmental selection and other evolutionary processes may contribute to this divergence. Therefore option A is correct; the other choices make absolute or scientifically false claims about distance.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Heredity and Evolution. Topic: Evolution and speciation.
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