★ Key Takeaways
Mutations, the Changes in the Sequences of Genes in Dna, Are One Source of Genetic Variation. Another Source Is Gene Flow, or the Movement of Genes Between Different Groups of Organisms. Finally, Genetic Variation Can Be a Result of Sexual Reproduction, Which Leads to the Creation of New Combinations of Genes.
Understand the full story behind How a Trait Appears or Is Expressed in this comprehensive feature.
Mutations, the Changes in the Sequences of Genes in Dna, Are One Source of Genetic Variation. Another Source Is Gene Flow, or the Movement of Genes Between Different Groups of Organisms. Finally, Genetic Variation Can Be a Result of Sexual Reproduction, Which Leads to the Creation of New Combinations of Genes.
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