What can be a possible result if gene flow between two populations remains stopped for a long time?
Answer and explanation
Correct answer: Different genetic changes may accumulate and new species may form
Gene flow normally mixes alleles between populations. If it remains absent, each population changes more independently through mutation, recombination, genetic drift, and natural selection. Over many generations, these differences may produce reproductive isolation, so the groups can become separate species. Option B is therefore correct. Isolation does not make populations identical, erase chromosomes, or automatically remove all variation; variation may instead accumulate differently in each group.
Frequently asked questions
What is the correct answer to this question?
Different genetic changes may accumulate and new species may form
Why is this the correct answer?
Gene flow normally mixes alleles between populations. If it remains absent, each population changes more independently through mutation, recombination, genetic drift, and natural selection. Over many generations, these differences may produce reproductive isolation, so the groups can become separate species. Option B is therefore correct. Isolation does not make populations identical, erase chromosomes, or automatically remove all variation; variation may instead accumulate differently in each group.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
