Peacocks (the males) have very long feather trains, while peahens (the females) do not. why don’t the feather trains just get longer, and longer, and longer every generation? what would happen if the females preferred feather trains that gave the males the best or most efficient flying ability?   this chapter deals with genetic variation and natural selection.

4the indian leaf butterfly has traits that allow it to resemble a leaf. the bright colors of the monarch butterfly indicate that the butterfly tastes bad and can be poisonous. how does the appearance of these butterflies them to survive? f the indian leaf butterfly is able to avoid predators while the monarch butterfly warns predators away. g. the indian leaf butterfly frightens predators away while the monarch butterfly poisons predators before they can eat it. h both butterflies rely on camouflage to avoid predation. j both butterflies cooperate with one another to avoid predation.

Where can you find prokaryotic and eukaryotic cells?

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