What does the notation rr mean to geneticists\

Glucose is a form of sugar found in the blood cells use glucose as a source of energy, but too much or too little can cause serious health issues so, the body uses the hormone insulin to regulate glucose n the blood insulin maintain glucose levels in the blood if blood glucose lovels got very high, what would you expect to see happen to insulin levels?

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

Nucleic acids offer variability because they contain alternate forms of genes called .