Understanding the Passage and Blank 4

The passage discusses the fundamental similarities among all human beings, highlighting shared inherited traits like a highly developed nervous system, backbones, erect posture, and hair. It then explains that differences among humans arise from subtle changes to this basic pattern.

The sentence containing blank number 4 is: "Racial differences ______ one of the finest distinctions and are based only on ______ (5) slight differences." We need to choose the most appropriate word to fill this blank.

Analyzing Options for Blank 4

Let's examine each option provided for blank number 4:

1. show: If we use "show", the sentence reads "Racial differences show one of the finest distinctions...". This is grammatically correct and makes sense, implying that racial differences demonstrate or reveal one type of fine distinction.
2. represent: Using "represent", the sentence becomes "Racial differences represent one of the finest distinctions...". This also fits grammatically and semantically. "Represent" means to be an example of, stand for, or be a type of something. In this context, racial differences are being presented as a specific example or category of the finest distinctions based on slight variations.
3. give: With "give", the sentence is "Racial differences give one of the finest distinctions...". This phrasing doesn't sound natural or grammatically correct in this context. Differences don't "give" a distinction; they *are* a distinction or *show* a distinction.
4. present: Using "present", the sentence is "Racial differences present one of the finest distinctions...". Similar to "show", "present" means to offer or exhibit. This is plausible, but "represent" often fits better when describing what something constitutes or exemplifies.

Choosing the Most Appropriate Word

Comparing the viable options, "show", "represent", and "present", we consider the overall flow and meaning of the passage. The passage states that differences arise from "changes of this basic pattern" and that racial differences are based on "slight differences". Racial differences are being identified as a category of distinction among humans that fits the description of being "finest" (implying subtle) and based on "slight differences". The word that best captures this idea of being a specific type or example of distinction is "represent". Racial differences *are* (or represent) a form of these subtle distinctions.

While "show" and "present" are close, "represent" more precisely defines what racial differences *are* in the context of the passage – they are a manifestation or type of fine distinction based on slight variations from the common human pattern.

Conclusion for Blank 4

Based on the analysis of the options and the context of the passage, the most appropriate word to fill blank number 4 is "represent". The sentence becomes: "Racial differences represent one of the finest distinctions and are based only on ______ (5) slight differences."

Revision Table: Passage Filling

Additional Information: Understanding Human Differences and Distinctions

The passage touches upon an important concept in biology and anthropology: the balance between shared human traits and variations. All humans belong to the same species, Homo sapiens, sharing a common genetic blueprint that results in fundamental traits like the structure of our nervous system, skeleton (backbones), and basic physical characteristics (erect posture, hair). These are fixed inherited traits common to the species.

Differences among humans, such as those often associated with race, skin color, hair texture, or facial features, are relatively minor variations compared to the vast number of shared traits. These differences arise from genetic variations that have accumulated over time, often influenced by factors like adaptation to different environments (e.g., skin pigmentation and UV radiation). The passage correctly points out that these differences, including racial differences, are "finest distinctions" based on "slight differences" in the underlying genetic pattern shared by all humans.

Understanding that genetic diversity exists alongside fundamental species unity is key to appreciating both the commonality and variation within the human population.