In a U1 A genetic change that occurs in a body cell of a
mouse will not contribute to the evolution of the
species because
(1) body cell mutations will cause the cell to die
before it reproduces
(2) the evolution of a species can result from
changes in reproductive cells, not body cells
(3) random changes are repaired by enzymes
before they are passed on to offspring
(4) the evolution of a species is caused by natural
selection, not genetic variation

According to the loco mass the mass of reactants and products

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

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.