Explain why calixs cells having more than a normal cat meant point mutation was not the cause

How does the study of genetic disorders such as pku biologists understand normal alleles?

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen

Which process of living things produces water that enters the water cycle