Stem cells are cells that are undifferentiated, and therefore have the potential to differentiate into a wide variety of specialized cell types. How might stem cells most likely be used in the future to treat human disease? a. Stem cells could be modified to produce chemicals that kill bacteria and viruses.
b. Stem cells could potentially be used as a source of renewable healthy cells and tissues.
c. Stem cells could be used to prevent genetic mutations that occur at birth.
d. Stem cells could be used as vectors to insert genetic information into human DNA.

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.