During Mitosis, genetic information changes from a chromatin state, to a chromosome state, and then a chromatid state. Why would a cell need to have its genetic information change into different styles during the cell division process?

The arrows indicate the direction of wind flow. which place experiences monsoons?

Recommend a strategy for incorporating sustainable human activity into a tropical rain forest biome.

Female luna moths (actias luna) attract males by emitting chemical signals that spread through the air. a male hundreds of meters away can detect these molecules and fly toward their source. the sensory organs responsible for this behavior are the comblike antennae visible in the photograph shown here. each filament of an antenna is equipped with thousands of receptor cells that detect the sex attractant. based on what you learned in this chapter, propose a hypothesis to account for the ability of the male moth to detect a specific molecule in the presence of many other molecules in the air. what predictions does your hypothesis make? design an experiment to test one of these predictions.