Mutations
the random appearance of a new trait in an organism
What is a mutation?
when the most fit survive and reproduce in their environments, therefore passing on traits
What is natural selection?
when all of the population dies
What is extinction?
when differences in size, shape, color, etc. exist within a population
What is variation?
when our medicines don't help us get better
What is bacterial resistance?
a mutation that causes an organism to be less likely to survive is this kind
What is a harmful mutation?
when animals have to fight for resources, space, or mates
What is competition?
migration can lead to this
What is gene flow?
when an organism survives because it can match its environment
What is camouflage?
the darker ones of these insects became more fit as the trees got dirty from industrial pollution
What are peppered moths?
a mutation that makes it more likely for an organism to survive is this kind
What is a helpful mutation?
Not all the _________ of parents usually survive.
What are offspring?
when organisms have a preference about reproduction
What is mate choice?
a group of the same organisms that live in the same place at a particular time
a genetic disease in which blood does not properly clot
What is hemophilia?
mutations happen at the level of
What is DNA?
populations need lots of these differences within them in order for natural selection to happen
changes in the population caused by random events
What is genetic drift?
something that helps an organism survive in its environment
What is an adaptation?
deer with these on the side of their head survived because they were more likely to escape from predators
What are eyes?
most mutations are this kind, which don't help or harm the organism
What is neutral?
the agent that "selects" for or against an organism's survival
What is the environment?
the important things that new individuals bring into a population that leads to evolution
What are different genes?
the father of natural selection
What is sickle cell anemia?