It is true that speciation occurs. Since macro-evolution is defined as evolution at and above the species level, this makes the statement that macro-evolution occurs an independently verifiable fact.
It is also true that in Biology we find nested hierarchies at every level - both at the range of observation from the molecular to the morphological, and at the range of groups from the single species to life-kind in general. This is precisely what we would expect if common descent were true not just within the genus, but for all known life.
Furthermore, it is true that we find morphological intermediates in the fossil record: forms that are intermediate morphologically between basal clades in the nested hierarchies of life and clades derived from those basal clades. A basal clade is a group of organisms linked by shared features; a derived clade is a group within that larger group that shares all those features, but is also linked by a distinct set of features present only within that smaller group. An example of this is the basal clade of Apes, and the derived clade of Great Apes, between which exists, for instance the transitional form Pierolapithecus catalaunicus. This, again, is exactly what we would expect to find if macro-evolution were not just true for minor taxa (eg. within a genus), but for all taxa, throughout time.
There are many statements about macro-evolution that have been verified through observation. The complete list of possible truths about macro-evolution is too large to detail in a single answer.
The six patterns of macroevolution are stasis, gradualism, punctuated equilibrium, adaptive radiation, convergent evolution, and extinction.
Microevolution refers to small-scale changes in a population's gene pool over a few generations, resulting in adaptations within a species. Macroevolution, on the other hand, involves large-scale evolutionary changes leading to the formation of new species over longer periods of time. Both processes are driven by the same mechanisms of genetic variation and natural selection.
Microevolution refers to small-scale changes in gene frequencies within a population over generations, while macroevolution involves large-scale evolutionary changes that lead to the formation of new species. Both processes are driven by genetic variation, natural selection, and other evolutionary mechanisms. Microevolution is the basis for macroevolution, as accumulated small changes can eventually result in the divergence of distinct species.
Described by the definition for evolution. Evolution is the change in allele frequency over time in a population of organisms.The prefered terms are evolution ( instead of microevolution ) and speciation ( instead of macroevolution ).
Microevolution is not part of macroevolution. Microevolution involves small-scale changes within a species over a shorter period of time, while macroevolution involves larger scale changes that lead to the formation of new species over a longer period of time.
microevolution can lead to macroevolution
The six patterns of macroevolution are stasis, gradualism, punctuated equilibrium, adaptive radiation, convergent evolution, and extinction.
Microevolution refers to small-scale changes in a population's gene pool over a few generations, resulting in adaptations within a species. Macroevolution, on the other hand, involves large-scale evolutionary changes leading to the formation of new species over longer periods of time. Both processes are driven by the same mechanisms of genetic variation and natural selection.
Microevolution refers to small-scale changes in gene frequencies within a population over generations, while macroevolution involves large-scale evolutionary changes that lead to the formation of new species. Both processes are driven by genetic variation, natural selection, and other evolutionary mechanisms. Microevolution is the basis for macroevolution, as accumulated small changes can eventually result in the divergence of distinct species.
Described by the definition for evolution. Evolution is the change in allele frequency over time in a population of organisms.The prefered terms are evolution ( instead of microevolution ) and speciation ( instead of macroevolution ).
macroevolution
Microevolution can lead to Microevolution
Microevolution is not part of macroevolution. Microevolution involves small-scale changes within a species over a shorter period of time, while macroevolution involves larger scale changes that lead to the formation of new species over a longer period of time.
macroevolution .........novanet
The fossil record
the development of dramatically novel designs, such as wings for flight
No, genetic drift is an example of microevolution.