Genetic Variation
Meiosis contributes to genetic variation when the gamete cell is unique due to a process during meiosis called cross-over which swaps around some genes to create unique chromosome combinations.
Gene flow is when a population with the same genes and traits move to another population and when they reproduce with the other population there is now a chance of the other population getting some traits or possibly mutations from the first population.
Example:
- Blue-eyed people from Spain move to a small town in England where people all have brown eyes. When they mate, some of their children now have blue eyes.
Its role in evolution is to change the species mentally and physically and after mutations eventually might make a new species adapted form the original species.
Gene flow is when a population with the same genes and traits move to another population and when they reproduce with the other population there is now a chance of the other population getting some traits or possibly mutations from the first population.
Example:
- Blue-eyed people from Spain move to a small town in England where people all have brown eyes. When they mate, some of their children now have blue eyes.
Its role in evolution is to change the species mentally and physically and after mutations eventually might make a new species adapted form the original species.