Ayoung patient is diagnosed with the genetic disorder lactose intolerance, which results in the inability to digest milk products due to a missing enzyme called lactase. what is most likely the cause of lactose intolerance in this patient?
question 1 options:
a. the patient is allergic to milk.
b. the patient stopped consuming milk products.
c. a disease destroyed the lining of the patient’s small intestine.
d. a mutation occurred in the gene that is responsible for producing lactase.

What is the importantence of the carbon and nitretan cycles in the environment

What advantages does a pedigree have over a written passage?

Refer to this portion of a dichotomous key for fish identification to answer the question. 1. (a) has a single dorsal fin ® 5 (b) has a double dorsal fin ® 2 2. (a) one fin is spiny, the other is smooth ® 3 (b) one fin is not spiny or smooth ® 4 5. (a) has small fin on back near tail ® 6 (b) has no fin on back near tail ® 7 6. (a) has barbs near the mouth ® catfish (b) does not have barbs near the mouth ® 10 7. (a) tail is asymmetrical ® 8 (b) tail is symmetrical ® 9 10. (a) scales are small ® trout (b) scales are large ® whitefish what is the next step to complete to identify a fish that has a single dorsal fin, no fin on the back near the tail, and no barbs near the mouth? step 2 step 5 step 7 step 10