Which statement best defines genes?

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Multiple Choice

Which statement best defines genes?

Explanation:
Genes are the units of heredity: specific DNA segments that carry the instructions for making the functional products (usually proteins or RNA) that determine traits and guide how those traits are passed from one generation to the next. That makes the statement describing genes as DNA segments that serve as the key functional units in hereditary transmission the best fit, because it captures both the material (DNA) and the role in inheritance. Genes are not themselves proteins (even though they encode proteins), nor are they lipids or environmental factors. Environmental factors can influence how genes are expressed, but they are not what a gene is.

Genes are the units of heredity: specific DNA segments that carry the instructions for making the functional products (usually proteins or RNA) that determine traits and guide how those traits are passed from one generation to the next. That makes the statement describing genes as DNA segments that serve as the key functional units in hereditary transmission the best fit, because it captures both the material (DNA) and the role in inheritance. Genes are not themselves proteins (even though they encode proteins), nor are they lipids or environmental factors. Environmental factors can influence how genes are expressed, but they are not what a gene is.

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