darwin’s theory of evolution by natural selection Flashcards
what does the theory of evolution state?
organisms have changed over time
what is natural selection?
the process by which the change of organisms has occurred by
who was the theory of natural selection proposed by?
charles darwin
what must exist for natural selection to occur?
variation between the genes of individuals in a population
what is this variation the result of?
the result of random mutation which does not occur in response to any factor in the environment
what aids survival?
advantageous characteristics
what are surviving individuals more likely to do?
reproduce and pass on their advantageous alleles
what happens over many generations to the advantageous allele?
the advantageous alleles become more common in the population
what 5 points should you make for a natural selection question?
variation
competition
survival
reproduction
alleles are passed on