Biodiversity

when a population shrinks, the genetic variation also shrinks

when some organisms from a species colonizes a new territory so the genetic variation is limited to what the founders carried

survival of the fittest

when humans purposely breed certain animals to get certain traits, is limited to the animals given

when humans inject genes from one animal into another, is rapid and u can use any animal

movement of organisms = movement of genes

change of gene variation frequency because of random chance

geographic isolation

speciation caused by everything but geographic isolation

when two populations of a species evolved so differently that if they mate their children die

extra chromosomes than ancestors. they can’t mate with diploid relatives

abiotic conditions under which a species can survive

abiotic conditions under which a species can grow and reproduce

abiotic and biotic conditions under which a species can grow and reproduce

animals that can live under a wide range of conditions, less likely to die out

animals that live under a narrow range of conditions, more likely to die out