In a cross between individuals that are Aa x Aa, how many boxes of the Punnett square will show an offspring that is AA?

The many volcanoes located along the edge of the pacific ocean make up the ring of fire. how does subduction play a role in the volcanic activity in the ring of fire?

Asmall population of chimpanzees lives in a habitat thant undergoes no change for a long period of time. how will genetic drift affect this population

If a grape were placed in a hypertonic solution what would happen and why?