daagh wrote:
ydmuley wrote
1. Considering that 'other' is used as an adjective and not as plural noun, the singular 'other' is good enough
2. There is no intended contrast, considering that, these two types of characteristics are inherent traits of the species. The sentence is just expressed in an indicative mode or declarative mode rather than in a comparison mode
To illustrate this, I will say I have two shirts, one blue, and the other red. I would not say I have two shirts, one blue but the other red.
3. Why a list of just two phrases but not two clear sentences is separated by a comma between the two arms may not be a decision point since punctuation is not tested in GMAT. Maybe the comma has been used over enthusiastically to distinguish the last item in a list from the prior ones. However, the crux is whether the presence of the comma changes the meaning or causes confusion. As long as the answer is no, the use of the comma is passable, I suppose. It may also be noted that a comma before and may rather add to the clarity of the context in general rather than act in the negative. I agree with ydmuley
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