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Which phrase is the best definition of a gene?
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1. Introduction to Genetics
Fundamentals of Genetics
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In the context of the fundamentals of genetics, what is a gene?
A
A specialized organelle where DNA is replicated and packaged during cell division
B
A complete set of all the DNA in an organism, including coding and noncoding regions
C
A segment of DNA that encodes a functional product (such as an RNA or a protein) and contributes to an organism’s traits
D
A pair of homologous chromosomes inherited from one parent
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Understand that a gene is a fundamental unit of heredity in genetics, responsible for carrying information that influences traits.
Recognize that genes are specific segments of DNA, not entire chromosomes or organelles.
Recall that genes contain the instructions to produce functional products, which can be proteins or RNA molecules.
Differentiate a gene from other genetic terms: it is not the whole DNA set (genome), nor an organelle, nor a chromosome pair.
Conclude that the correct definition of a gene is a segment of DNA that encodes a functional product and contributes to an organism's traits.
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