PLEASEE help me answer this question

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

Tides that occur during the new and full moons

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]