Ap Biology Terms For Chapter 24

Front 1

the origin of new taxonomic groupls (new species, new genera, new families, even new kingdoms)

Back 1

macroevolution

Front 2

the origin of new species

Back 2

speciation

Front 3

a group whose members possesssimilar anatomical characteristics and have the ability to interbreed

Back 3

species

Front 4

a population or group of populations whose members have the potential to interbreed with one another in nature to produce viable, fertile offspring, but who cannot produce viable, fertile offspring with members of other species

Back 4

biological species concept

Front 5

impede mating between species or hinder the fertilization of ova if members of different species attempt to mate

Back 5

prezygotic barriers

Front 6

prevent the hybrid zygote from developing into a viable, fertile adult

Back 6

postzygotic barriers

Front 7

defines a species in terms of its ecological niche, the set of environmental resources a species uses

Back 7

ecological species concept

Front 8

the factors that are most important for the cohesion of individuals as a species vary

Back 8

pluralistic species concept

Front 9

characterizes each species in terms of a unique set of structural features

Back 9

morphological species concept

Front 10

defines a species as a set of organisms with a unique genetic history

Back 10

genealogical species concept

Front 11

radical change in the genome of a subpopulation, reproductively isolating the subpopulation from the parent population

Back 11

sympatric speciation

Front 12

the emergence of numerous species from a common ancestor introduced into an environment, presenting a diversity of new opportunities and problems

Back 12

adaptive radiation

Front 13

some plant species have their origins in accidents during cell division that result in extra sets of chromosomes

Back 13

polyploidy

Front 14

an individual that has more than has more than two chromosome sets, all derived from a single species

Back 14

autopolyploid

Front 15

the contribution of two different species to a polyploid hybrid

Back 15

allopolyploid

Front 16

a theory of evolution advocating spurts of relatively rapid change followed by long periods of stasis

Back 16

punctuated equilibrium

Front 17

structures that evolve in one context but become co-opted for another function

Back 17

exaptation

Front 18

the shape of an organism depends in part on the relative growth rates of its different parts during development

Back 18

allometric growth

Front 19

evolutionary change in the rate of timing of developmental events

Back 19

heterochrony

Front 20

the retention in an adult organism of the juvenile features of its evolutionary ancestors

Back 20

paedogenesis

Front 21

determine basic features

Back 21

homeotic

Front 22

analogous to the production of a trend within a poplulation by natural selection

Back 22

species selection