Question

reading check compare and contrast how is the action of natural selection similar for single - gene and polygenic traits? how is it different?

Explanation:

Answer:

Similarities: Natural selection acts on the phenotypes associated with both single - gene and polygenic traits, favoring traits that increase an organism's fitness (ability to survive and reproduce). Differences: For single - gene traits, natural selection can lead to changes in allele frequencies in a more straightforward way, often resulting in discrete changes in phenotypes (e.g., a shift from one dominant - recessive phenotype ratio to another). For polygenic traits, natural selection acts on a range of phenotypes across a continuous spectrum, and can cause more gradual changes in the distribution of phenotypes in a population (e.g., directional, stabilizing, or disruptive selection can reshape the bell - shaped curve of a polygenic trait's distribution).