Would poor nutrition affect the traits or the genes of an organism?

Poor nutrition can significantly impact an organism's traits by influencing its development, health, and overall functioning. While it doesn't directly alter the genes themselves, inadequate nutrition can affect gene expression and phenotypic traits through epigenetic changes. This means that the effects of poor nutrition can be observed in the organism's physical and behavioral traits, potentially influencing survival and reproduction. Over time, these effects could contribute to evolutionary changes within a population.