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Multiple Choice
In the context of the fundamentals of genetics, which statement best defines a gene?
A
A type of organelle responsible for producing ATP through cellular respiration
B
A segment of DNA (or RNA in some viruses) that encodes a functional product, such as a protein or a functional RNA, and contributes to a heritable trait
C
A complete set of all chromosomes found in a cell, including autosomes and sex chromosomes
D
Any observable characteristic of an organism that is always determined solely by the environment