As we read the sentence from the beginning, we understand that somethings are almost like clones, and they are like clones in terms of their similarity to each other. So, as we read further, we expect to see a plural noun that can be "like clones". However, we encounter the noun "the cheetah species? homogeneity". Please note that "cheetah species" is not a noun here; it?s acting as an adjective to "homogeneity".
So, we have an error here ? Illogical modification. We know that homogeneity cannot be like clones!
Also, since we have a pronoun "them" (?makes them especially"), it needs to refer to a noun; however, cheetah species is not acting as a noun in this sentence. Thus, we do not have an antecedent for "them". (Please note that in OG2017 Q805, a pronoun "she" refers to a noun in the possessive form. Since there is an official precedent that a pronoun can refer to a noun in the possessive form, this error is not deterministic i.e. we cannot reject an option just for this problem. However, it also doesn?t mean that we become completely indifferent to this rule. The presence of an exception to a rule doesn?t mean that we discard the rule altogether. I think it means that we use this rule but do not reject an option just for violating this rule.)
Therefore, the original sentence has two errors .