Jackson's mother and father both have normal blood cells, a dominant trait, while Jackson has sickle cell anemia, a recessive trait. Which genotype for sickle cell
anemia represents each of Jackson's parents' traits?

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?