Assume that you are studying a trait determined by a number of polygenes. if there are seven phenotypic categories, how many genes are probably involved?

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

As a small change in a person's dna can cause a genetic disorder

Johnny rode his bike 4 blicks down the street to his friend's house once he got to his friend house and realized he could not cone out to play he turned aroubd and went back home.what is displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point