The higher invertebrates are divided into two evolutionary lines, protostomes and deuterostomes. this division is based on which developmental feature?

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature above 37 degrees celsius (98.6 degrees f)? describe what might happen if the temperature decreased by 10 degrees celsius.

Mutations associated with albinism affect proteins involved in synthesis

How does natural selection change thephenotypes within a population over time?