Final answer:
The sentence offers a formal definition of genetics, emphasizing the inheritance of traits through genes and their influence on characteristics.
Explanation:
Formal definition: The sentence provides a formal definition of genetics by explaining how traits are inherited through genes, and how they play a role in various characteristics.
Genes are inherited from parents and determine the genotype, while the phenotype is the physical expression of these genes influenced by both genotype and environment, known as epigenetics.
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