Which of the given options is the most logical sequencing of the following sentences to form a meaningful paragraph?
1. Traits such as eye color, blood type, and susceptibility to certain diseases are passed on by the process of replication.
2. The specific sequence of bases in a gene determines the structure of a protein, and therefore its function.
3. DNA is organized into structures called genes, which carry instructions for building proteins.
4. This is the foundation of heredity, as offspring inherit a combination of genes from their parents, which influence their traits.
Show answer & explanation
Correct answer: A
Explanation
Correct Answer
3-2-4-1
Explanation
Opening Statement: Sentence 3 introduces the primary subject matter of the paragraph by defining DNA and how it is organized into structures called "genes" to carry instructions for building proteins.
Logical Continuation: Sentence 2 directly expands upon the concept of gene instruction introduced in sentence 3 by explaining how the "specific sequence of bases in a gene" determines protein structure and function.
Concept Linkage: Sentence 4 begins with the demonstrative phrase "This is the foundation of heredity," where the pronoun "This" smoothly references the operational relationship between genes and functional traits detailed in sentence 2.
Concluding Examples: Sentence 1 provides concrete, real-world examples (eye color, blood type, disease susceptibility) of the general "traits" mentioned at the end of sentence 4, wrapping up the paragraph cohesively.
Key Points
Word: 3-2-4-1
Meaning: The only arrangement that flows logically from defining a biological structure to providing functional details, linking it to heredity, and concluding with physical examples.
Grammatical Role: Sequential paragraph arrangement (functions to create a coherent text block by linking ideas using pronoun references and thematic progression).