What is a segment of DNA that codes for a trait called?

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Study for the California Science Test. Get ready for the 8th grade exam with flashcards and multiple choice questions, each question has hints and explanations. Prepare with confidence!

Multiple Choice

What is a segment of DNA that codes for a trait called?

Explanation:
A gene is a segment of DNA that carries the instructions to make a product—usually a protein or RNA—that helps determine a trait. DNA stores genetic information, and chromosomes are structures that organize many genes. A chromosome isn’t a single coding piece; it’s a bundle that contains numerous genes. Variation refers to differences in DNA sequences or traits among individuals, not the coding segment itself. Proteins are the products made from gene instructions, carrying out functions that influence traits, but the actual unit of heredity that codes for a trait is the gene. So, the segment of DNA that codes for a trait is called a gene.

A gene is a segment of DNA that carries the instructions to make a product—usually a protein or RNA—that helps determine a trait. DNA stores genetic information, and chromosomes are structures that organize many genes. A chromosome isn’t a single coding piece; it’s a bundle that contains numerous genes. Variation refers to differences in DNA sequences or traits among individuals, not the coding segment itself. Proteins are the products made from gene instructions, carrying out functions that influence traits, but the actual unit of heredity that codes for a trait is the gene. So, the segment of DNA that codes for a trait is called a gene.

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