Why does independent assortment increase variation?
Independent assortment increases variation because different genes are distributed randomly into gametes, creating new combinations.
Key Idea
| Term | Meaning |
|---|---|
| Independent Assortment | Genes of different traits separate independently |
| Variation | Differences among individuals |
How Variation Increases
| Factor | Impact | Explanation |
|---|---|---|
| Random Distribution | New combinations | Genes mix in different ways |
| Multiple Traits | More possibilities | Each trait combines independently |
| Gamete Diversity | Unique gametes | Each gamete has different gene set |
Stepwise Understanding
During meiosis, gene pairs separate independently
One gene does not influence the other
Different combinations of alleles form in gametes
Fertilization mixes these combinations further
Offspring show new variations
Important Concept
More combinations of genes means more diversity in phenotype.
Real Insight
Even with same parents, children look different because gene combinations are shuffled randomly, this randomness is key reason.
So independent assortment increases variation by creating multiple genetic combinations.