Choose the best answer.One way species evolve is by...

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BlackTom AI · Accepted Answer

When approaching the question, I will evaluate each option in turn to determine how it relates to how species evolve.
Option a: Immigration / Emigration. Gene flow caused by individuals moving into or out of a population can introduce or remove alleles, changing allele frequencies over time. This is a recognized mechanism of evolution, so this choice aligns with evolutionary theory.
Option b: Random mating. While random mating is part of the Hardy-Weinberg equilibrium model, it does not by itself cause evolutionary change. If mate choice is random and other conditions are met (no selection, mutation, migration, or genetic drift), allele frequencies remain constant. Therefore, random mating alone does not explain evolution.
Option c: Being the same as their parents. If offspring are genetically identical to their parents, there is no change in allele frequencies across generations, which means no evolution is occurring. This option describes stasis rather than evolution.
Option d: Magic. This option is not a scientific mechanism and has no basis in biology or genetics. Evolution is explained through natural processes supported by evidence, not supernatural explanations.
In summary, option a correctly identifies a recognized driver of evolutionary change, whereas the other options describe scenarios that do not produce evolutionary change or rely on non-scientific concepts.

BIO 181 (001&002) FALL 2025 FA25: Cumulative Exam 4 covers the most important content from Units 1-4: You can do this!!! : ) [Grade is out of 150/900 pts, the same am't of pts for the active learning "easy points" classwork.]

Choose the best answer.One way species evolve is by...

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