darwins theory Flashcards
what is the cause of genetic variations?
mutations
how do adaptations help for survival?
responses by an organism to help with survival and reproduction, responses made by an organism that will help it survive/reproduce, structural features of organisms body for survival/reproduction
how does natural selection allow some organisms to survive better than others?
traits passed down allow organisms to adapt to the environment better than other organisms of the same species
how can natural selection lead to the evolution of new species?
organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success
what is an example of evolution that supports Darwins theory?
the evolution of bacteria
one feature that Darwin discovered with Finches on different islands
different beaks of the same species for them to adapt to their different environments - different foods
how frequently do bacteria evolve?
every 20 minutes
what is the problem with the evolution of bacteria?
bacteria is becoming resistant to antibiotics (superbug)
