Which term describes the structure that contains many genes arranged along a thread?

Which term describes the structure that contains many genes arranged along a thread?

• A. Proteins
• B. Genes
• C. DNA
• D. Chromosome

Answer: (D)

Chromosomes organize genetic information within the cell. They are long DNA molecules wrapped around proteins, forming threadlike structures. Along a chromosome, many genes are arranged in a line, each gene a specific sequence that carries instructions. A gene is a portion of DNA, and DNA is the material that carries the genetic code. But a chromosome is the structure that holds many genes along a single thread. Proteins are the products coded by genes, not the structure that contains them. So the word that describes the structure containing many genes arranged along a thread is chromosome.

Chromosomes organize genetic information within the cell. They are long DNA molecules wrapped around proteins, forming threadlike structures. Along a chromosome, many genes are arranged in a line, each gene a specific sequence that carries instructions. A gene is a portion of DNA, and DNA is the material that carries the genetic code. But a chromosome is the structure that holds many genes along a single thread. Proteins are the products coded by genes, not the structure that contains them. So the word that describes the structure containing many genes arranged along a thread is chromosome.