Frage | Antworten |
Adaptation | structure, behaviour, or physiological process |
Mimicry | structural adaptation in which harmless species look like harmful species |
Variations | difference between individuals |
Mutations | permanent change in genetic material |
Selective Advantage | genetic advantage that improves an organisms chance of survival |
Selective pressure | environmental conditions select certain trait and go against other traits |
Fitness | contribution to gene pool |
Biotechnology | use of technology and organisms to produce useful products |
Natural Selection | traits of a population change over time |
Artificial Selection | certain traits chosen by humans to make a new product |
Sexual Selection | natural selection for mating based |
Monoculture | extensive planting of the same varieties of species |
Fossil Record | remains and traces of past life |
Transitional Fossils | fossils that show links betweens a group of organisms |
Vestigial Structure | reduced version of a structure |
Biogeography | study of past and present geographical distribution of species |
Homologous structures | similar structural elements and origin but different function |
Analogous structure | do not have common evolutionary origin but performs similar functions |
Embryology | study of pre-birth stages |
Gene Pool | genes of all individuals in a population |
Non-random mating | mating on the basis of mate selection |
Genetic Drift | change in frequencies of alleles due to events |
Founder effect | change in gene pool when individuals start a new population |
Bottleneck effect | changes in gene distribution that result from a rapid decrease in population size |
Stabilizing Selection | natural selection that favours intermediate phenotypes |
Directional selection | favours phenotype at 1 extreme |
Disruptive Selection | favours the extremes of a range of phenotypes rather than intermediate phenotypes |
Speciation | formation of new species from existing species |
Pre- zygotic isolating mechanism | impedes mating or prevent fertilization |
Behavioural isolating mechanism | differences in call/song |
Habitat isolating mechanism | two species may live in the same general region but in different habitats |
Temporal isolating mechanism | kept separate by temporal(timing) barriers |
Mechanical Isolating Mechanism | species that are closely related mate but cannot fertilize |
Gametic Isolating Mechanism | gametes from different species do meet, they will rarely fuse to form a zygote |
Post - Zygotic Isolating Mechanism | barrier that prevents hybrid zygotes to be fertile |
Hybrid Inviability | Genetic Incompatibility of the interbred species may stop development of hybrid zygote |
Hybrid Sterility | mate and produce infertile hybrid |
Hybrid Breakdown | F1 gen is fertile but F2 gen is not fertile |
Sympatric Speciation | populations within the same geographical areas diverge and become reproductively isolated |
Allopatric Speciation | population is split into two or more isolated groups by a barrier |
Ecological Niche | role and physical distribution of a specie in a environment |
Adaptive Radiation | diversification of a common ancestral species |
Gradualism | evolutionary change as slow and steady before and after divergence |
Punctuated Equilibrium | evolution history as long period of stasis or equilibrium |
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