Here's why:
* DNA as the blueprint of life: DNA holds the genetic instructions for building and maintaining an organism. It's passed down from parents to offspring, ensuring the continuity of life.
* Variations in DNA: Differences in DNA sequences (mutations) lead to variations within a species, driving evolution and adaptation.
* Gene expression: DNA's instructions are translated into functional proteins through the process of gene expression. This determines an organism's traits and how it functions.
While other big ideas in biology, like evolution, cell function, and energy flow, involve DNA, inheritance is the core concept that revolves around the structure, function, and transmission of genetic information.
