47 mins for 47% :D

I got all correct except for this one (which I later got correct through BR):

Fish with teeth specialized for scraping algae occur in both Flower Lake and Blue Lake. Some biologists argue that because such specialized characteristics are rare, fish species that have them should be expected to be closely related. If they are closely related, then the algae-scraping specialization evolved only once. But genetic tests show that the two algae-scraping species, although possibly related, are not closely related. Thus, the algae-scraping specialization evolved more than once.

I didn't understand what the answers were saying. Upon review, I realized that I skimmed over a key section: because such specialized characteristics are rare, fish species that have them should be expected to be closely related.

The conclusion states that because genetic testing showed two species being possibly related, and not closely related, the biologists' argument must be false.

The author views the close relation between species as a necessity, which is why the argument is flawed.