In the United States, approximately one child in 20,000 is born with PKU (phenylketonuria), a syndrome that affects individuals homozygous for the recessive allele (aa).

What is the frequency of the dominant allele?

What is the frequency of heterozygotes?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

What does natural resource management aim at ?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.