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B- Unit 5 Lesson 12
Sources of New DNA Combinations
| Term | Definition |
|---|---|
| crossing over | the process that occurs when genetic information is swapped between homologous chromosomes |
| mutations | changes in DNA sequence |
| homologous chromosomes | pair of chromosomes, one from each parent, that pair up during meiosis |
| adaptation | beneficial mutation that can increase a species survival rate |