I believe it's a run-on sentence.

Many antibiotics can become ineffective if administered repeatedly to members of a population, and one reason is suggested by the finding that there are bacteria with special enzymes that can deactivate certain antibiotics in all countries but those that have reported that they have had limited access to these drugs.

"if administered repeatedly to members of a population" is an adverb, so it can be removed from the main clause. So the bold part is what the main clause appears to be, and I don't think they should be combined together with conjunction "and".

thats what i thought
but its actually correct
i can't get my head around ", and one " part of the sentence
source is knewton
instructors pls help!

If "and" is not used it ll become the runon sentence.

", and one reason is suggested" is correct?

shouldn't there be a "that" in there?

san2009 wrote:What, if anything, is wrong with this sentence?

Many antibiotics can become ineffective if administered repeatedly to members of a population, and one reason is suggested by the finding that there are bacteria with special enzymes that can deactivate certain antibiotics in all countries but those that have reported that they have had limited access to these drugs.

I think the sentence is okay in the way as it is.

Many antibiotics can become ineffective if [they are]administered repeatedly to members of a population, and one reason is suggested by the finding that there are bacteria with special enzymes that can deactivate certain antibiotics in all countries but those that have reported that they have had limited access to these drugs

Think about another sentence:

Although eradicated in the United States, polio continues elsewhere and could be brought...

=> Here, Although [it is ] eradicated in the USA, polio.

In the same way the sentence is correct.

Again:

Independent clause + COMMA + FANBOYS + Independent clause is correct.


We can wait for a reply from the instructors.

gmat_perfect wrote: Think about another sentence:

Although eradicated in the United States, polio continues elsewhere and could be brought...

=> Here, Although [it is ] eradicated in the USA, polio.

In the same way the sentence is correct.

Again:

Independent clause + COMMA + FANBOYS + Independent clause is correct.


We can wait for a reply from the instructors.

"Although eradicated in the United States" is NOT an independent clause. It lacks subject. It's actually a modifier, and not the same parallel example to question at hand.

uwhusky wrote:

gmat_perfect wrote: Think about another sentence:

Although eradicated in the United States, polio continues elsewhere and could be brought...

=> Here, Although [it is ] eradicated in the USA, polio.

In the same way the sentence is correct.

Again:

Independent clause + COMMA + FANBOYS + Independent clause is correct.


We can wait for a reply from the instructors.

"Although eradicated in the United States" is NOT an independent clause. It lacks subject. It's actually a modifier, and not the same parallel example to question at hand.

One thing:

I did not say that "although eradicated..." is an IC. I have just shown that "although eradicated"---> Although it is eradicated, and the same thing has been applied in the said sentence.

I have seen this pattern in NewYork Times and in Washington Post.

Thanks.