Genetic variation helps ensure the survival of a species. It is this variation that is the essence of evolution. Without genetic differences among individuals, "survival of the fittest" would not be likely. This activity discusses how sexual reproduction leads to genetic variation in offspring, defines crossing-over, and explains the importance of independent assortment and random fertilization. [Free Registration/Login may be required to access all resource tools.]

Concepts

sexual reproduction, genetic variation

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Additional Tags

crossing-over, random fertilization, ck-12 episd, ck-12 foundation: genetic variation in organisms, independent assortment

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Classroom Considerations

• Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)
• The intended use for this resource is Instructional|practice