Sensory clues to the possible presence of hazardous materials in water include:
a. dead fish
b. unusual algae growth
c. white froth
d. all of these

Matched chromosomes carrying information about the same characteristics in the organism are called

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.

Why does controlling transcription affect prokaryotic gene expression?