Evolution
Variation
#1 - Variation exists in all populations.
#2 - Some of that variation is heritable
#3 - Base pair sequences are encoded in a set of self-replicating molecules that form templates for making proteins.
#4 - Combinations of genes that did not previously exist may arise via "Crossing Over" during meiosis, which alters the sequences of base pairs on a chromosome.
#5 - Copying errors (mutations) can also arise, because the self-replicating process is of imperfect (although high) fidelity; these mutations also increase the range of combinations to alleles in a gene pool.
#6 - The recombinations and errors produce a tenancy for successively increasing genetic divergence radiating outward from the initial state of the population
Selection
#7 - Some of that heritable variation has an influence on the number of offspring able to reproduce in turn, including traits that affect mating opportunities, or survival prospects for either individuals or close relatives.
#8 - Characteristics which tend to increase the number of an organism's offspring that are able to reproduce in turn, tend to become more common over generations and diffuse through a population; those that tend to decrease such prospects tend to become rarer.
#9 - Unrepresentative sampling which alters the relative frequency of the various alleles can occur in populations for reasons other then survival/reproduction advantages, a process known as "genetic drift".
#10 - Migration of individuals from one population to another can lead to changes i the relative frequencies of alleles in the "recipient" population
Speciation
#11 - Populations of a single species that live in different environments are exposed to different conditions that can "favour" different traits. These environmental differences can cause two populations to accumulate divergent suites of characteristics.
#12 - A new species develops (often initiated by temporary environmental factors such as a period of geographic isolation) when a sub-population acquires characteristics which promote or guarantee reproductive isolation from the alternate population, limiting the diffusion to variations thereafter.
Sufficiency
#13 - The combination of these effects tends to increase diversity of initially similar life forms over time
#14 - Over the time frame from the late Hadean (3.8Bya) to present, this becomes sufficient to explain both the diversity within and similarities between the forms of life observed on Earth, including both living forms directly observed in the present, and extinct forms indirectly observed in the fossil record.
The above is what Evolution IS
If you have a problem with Evolution, you have a problem with one or more of these fourteen observations/facts.
Which one is it?
Provide evidence that any of the above are incorrect.
The Theory of Evolution explains the diversity of life, not the origins.
Just like,
The Theory of Gravity predicts the amount of force as a result of universal gravitational constant x of mass of the object, divided by the radius squared.
Yet, it doesn't explain where the mass comes from.
While the origins of life are a question of interest to evolutionary biologists and frequently studied in conjuction with researchers from other fields such as geochemistry, ogranic chemistry and bio-mechanics, the core of evolutionary theory itself does not rest on a foundation that requires any knewledge about the origins of life on earth.
It is primarily concerned with the change and diversification of life after the origins of the earliest living things - although there is not yet a consensus as to how to distinguish "living" from "non-living" (In regards to Organics compounds/molecules)
Source: Image From Reddit
|
|
Tweet |
|
|
