Question

review the fifth and sixth paragraphs.
genetic tests can be used to detect the genes that turn on the bodys immune response to gluten. such genetic tests can only help rule out celiac disease; they cant be used for diagnoses, since many people with these genes never develop celiac disease.
fasanos team is investigating why some people with these genes dont develop celiac disease. the researchers follow infants who are at an increased risk for celiac disease because a family member has celiac disease. the team hopes the findings from this study will help doctors predict who will develop celiac disease and learn how to prevent it.
however, going on a strict gluten - free diet for life remains the only
how do the fifth and sixth paragraphs work together?
they provide a surprising fact and then give an explanation.
they point out a limitation and then introduce related research.
they set up a seeming contradiction and then explain it away.

Explanation:

Paragraph 5 states that genetic tests can only rule out celiac disease (a limitation). Paragraph 6 introduces Fasano's team's research on why some people with the genes don't develop the disease. So, the two paragraphs first point out a limitation (genetic tests' inability to diagnose) and then introduce related research (Fasano's team's work).

Answer:

They point out a limitation and then introduce related research.