adaption, natural selection and the evolution of species Flashcards
what is mutation?
is the random change in an organisms genetic information its rare and occur infrequently
what are factors that increase mutation rates?
Radiation and some chemical
name the type of radiation and chemical?
UV rays, Xrays
mustard gas and cigarette smoke
what does it mean by ‘ advantageous ‘ mutations?
the increase in ability of organism to survive and re produce
what does it mean by ‘ neutral’ mutation?
its a mutation that neither harms or benefits an organism
what does it mean by ‘ disadvantageous’ mutation?
decreases the advantages of an organisms survival
what is evolution?
change in characteristic of an organism overtime
what is natural selection?
it determinds which indavidual will do best at surviving and reproducing, survival of the fittest.
what is speciation?
is the formation of a new species
what is adaption?
an inheritated characteristic that makes organisms well suited to survial in its enviormen/niche
what makes it possible for a population to evolve over time in response to changing enviormental conditions?
variation