Information about dairy products, lactose, and lactase are listed in the

table shown.
Dairy Products and Lactose and Lactase in Humans Based on this information, which hypothesis best predicts how a change
to the gene could affect people who do not produce enough lactase? M. A change that causes the gene to increase the amount of lactase it produces
will increase a person's ability to break down lactose. P. A change that causes the gene to decrease the amount of lactase it produces
will positively affect a person's body. R. A change that causes the gene to increase the amount of lactase it produces
will allow a person to consume large amounts of minerals. S. A change that causes the gene to decrease the amount of lactase it produces
will allow a person to digest more protein.

1 answer

Based on the information regarding dairy products, lactose, and lactase, the hypothesis that best predicts how a change to the gene could affect people who do not produce enough lactase is:

M. A change that causes the gene to increase the amount of lactase it produces will increase a person's ability to break down lactose.

This hypothesis is the most relevant because lactase is the enzyme responsible for breaking down lactose, the sugar found in dairy products. If a person has insufficient lactase production, they typically experience difficulty digesting lactose, which can lead to symptoms of lactose intolerance. Increasing lactase production would directly improve their ability to break down lactose and thereby alleviate the symptoms associated with lactose intolerance.

The other options (P, R, S) do not directly address the issue of lactose breakdown and suggest effects that are not associated with lactase's primary function.