Final answer:
In this Biology question, a group of 16,000 people are tested for a gene that increases the risk for lupus. Large groups are needed to study disease risk and genetic variations. Specific calculations or conclusions cannot be made without additional information.
Step-by-step explanation:
The subject of this question is Biology. The question is about a group of 16,000 people being tested for a gene called lfi202 that increases the risk for lupus.
In order to effectively study the gene and its effects on disease risk, very large groups of people need to be studied, usually in the tens of thousands. This allows researchers to find subtle variations in the gene that may affect disease risk.
In this specific case, the question doesn't provide information about the specific results of the gene test or the risk of lupus in the tested population, so specific calculations or conclusions cannot be made.