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Question

Each of the following items in this section consists of a sentence, the part of which have been jumbled. These parts have been labelled as P, Q, R and S. You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly.

P: scientists have determined

Q: injury in animals and humans

R: that is linked to the severity of spinal cord

S: a gene signature

This question was previously asked in
CDS I 2019 Elementary Mathematics Previous Year Paper (03-Feb-2019)
The correct answer is

P S R Q

Understanding Jumbled Sentences and Re-arrangement

This question asks us to take four parts of a sentence, labelled P, Q, R, and S, and put them back in the correct order to form a grammatically sound and meaningful sentence. This tests our understanding of sentence structure and logical flow.

Analyzing the Jumbled Parts

Let's look at each part:

  • P: scientists have determined
  • Q: injury in animals and humans
  • R: that is linked to the severity of spinal cord
  • S: a gene signature

Step-by-Step Re-arrangement Process

We need to find a starting point and see how the other parts connect. Often, a sentence begins with a subject followed by a verb.

  1. Part P seems like a good start: "scientists have determined..." What did the scientists determine?
  2. They must have determined *something*. Looking at the other parts, "a gene signature" (S) fits well after "determined". So, "scientists have determined a gene signature..."
  3. Now we need to describe this "gene signature". Part R starts with "that is linked...", which is often used to introduce a description of a preceding noun (like "gene signature"). So, "...a gene signature that is linked to the severity of spinal cord..."
  4. What is linked to the severity of the spinal cord? The phrase "injury in animals and humans" (Q) completes the idea. It describes the spinal cord condition being discussed. So, "...spinal cord injury in animals and humans."

Putting it all together, the sequence P S R Q forms the sentence: "scientists have determined a gene signature that is linked to the severity of spinal cord injury in animals and humans."

Evaluating the Proposed Order (P S R Q)

Let's check if the sentence formed by P S R Q makes sense:

P (scientists have determined) + S (a gene signature) + R (that is linked to the severity of spinal cord) + Q (injury in animals and humans)

Result: "scientists have determined a gene signature that is linked to the severity of spinal cord injury in animals and humans."

This sentence is grammatically correct and conveys a clear meaning about scientists identifying a specific gene signature related to spinal cord injury severity in both animals and humans.

Checking Other Options (for comparison)

Let's quickly look at how other arrangements would sound:

  • Q R P S: "injury in animals and humans that is linked to the severity of spinal cord scientists have determined a gene signature." (Awkward and lacks proper structure).
  • Q S P R: "injury in animals and humans a gene signature scientists have determined that is linked to the severity of spinal cord." (Doesn't flow logically).
  • P Q R S: "scientists have determined injury in animals and humans that is linked to the severity of spinal cord a gene signature." (Incorrect structure after "determined").

The arrangement P S R Q is the only one that forms a coherent and grammatically correct sentence based on the provided parts.

Part Text Role in Sentence (P S R Q)
P scientists have determined Main Subject and Verb
S a gene signature Direct Object (what was determined)
R that is linked to the severity of spinal cord Relative Clause modifying 'gene signature'
Q injury in animals and humans Completes the phrase 'spinal cord injury' and specifies scope

Revision Table: Jumbled Sentence Skills

Mastering jumbled sentence questions involves several key skills:

  • Identifying the subject and main verb to find a potential starting point.
  • Looking for connecting words like relative pronouns (that, which, who) or conjunctions (and, but, because) that link clauses or phrases.
  • Understanding how adjectives, adverbs, and phrases modify other words.
  • Checking the logical flow and meaning of the sentence formed by the re-arrangement.
  • Considering different possible arrangements and testing them.

Additional Information: Sentence Structure and Scientific Context

The sentence we constructed, "scientists have determined a gene signature that is linked to the severity of spinal cord injury in animals and humans," follows a common scientific reporting structure:

  1. Subject + Verb: Scientists (subject) have determined (verb)... This states who did what.
  2. Direct Object: ...a gene signature... This is what they determined.
  3. Relative Clause: ...that is linked to the severity of spinal cord injury... This clause (starting with "that") provides crucial detail about the "gene signature". Relative clauses are essential for adding descriptive information efficiently.
  4. Completing Phrase: ...in animals and humans. This phrase specifies the context or scope of the spinal cord injury being studied.

This type of structure is frequently used in academic and scientific writing to report findings clearly and concisely.

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