Chain 3
From Chains of Reason
Life on Earth is the product of evolution by natural selection.
Link 1
- Premise 1
- A plant or animal's prospects of surviving and reproducing are affected by the nature of its anatomy.
- Premise 2
- There is slight, random variation in the hereditary anatomical features of the members of any species of plant or animal.
- Conclusion
- Some hereditary anatomical variations within the population of any species of plant or animal will be more conducive to survival and reproduction than others.
Link 2
- Premise 1
- Some hereditary anatomical variations within the population of any species of plant or animal will be more conducive to survival and reproduction than others.
- Premise 2
- The more an hereditary anatomical feature of a plant or animal is conducive to survival and reproduction, the more likely it is to pass into the next generation.
- Conclusion
- Some hereditary anatomical variations within the population of any species of plant or animal will be inherently more likely to pass into the next generation than others.
Link 3
- Premise 1
- Some hereditary anatomical variations within the population of any species of plant or animal will be inherently more likely to pass into the next generation than others.
- Premise 2
- In the competition between members of any species of plant or animal for finite resources and mates, any hereditary anatomical variations which are inherently more likely to pass into the next generation than others will tend to do so at the expense of those others.
- Conclusion
- Some hereditary anatomical variations within the population of any species of plant or animal will tend, in a non-random way, to become increasingly common in the population with each new generation, at the expense of other such variations.
Link 4
- Premise 1
- Some hereditary anatomical variations within the population of any species of plant or animal will tend, in a non-random way, to become increasingly common in the population with each new generation, at the expense of other such variations.
- Premise 2
- The constant occurrence of mutant genes within every generation of any species of plant or animal ensures that there is a constant supply of new variation in the population of any species of plant or animal.
- Conclusion
- The anatomical features of today’s plants and animals, and therefore the organisms themselves, could have evolved from less complex forms as the result of the non-random accumulation of the slight, random hereditary anatomical variations that always exist in the population of any species of plant or animal.
Link 5
- Premise 1
- The anatomical features of today’s plants and animals, and therefore the organisms themselves, could have evolved from less complex forms as the result of the non-random accumulation of the slight, random hereditary anatomical variations that always exist in the population of any species of plant or animal.
- Premise 2
- It can be concluded from the fossil evidence that the form of today’s plants and animals have evolved over geological time.
- Conclusion
- The anatomical features of today’s plants and animals, and therefore the organisms themselves, have evolved over geological time from less complex forms as the result of the non-random accumulation of the slight, random, and hereditary, anatomical variations that always exist in the population of any species of plant or animal.
Link 6
- Premise 1
- The anatomical features of today’s plants and animals, and therefore the organisms themselves, have evolved over geological time from less complex forms as the result of the non-random accumulation of the slight, random, and hereditary, anatomical variations that always exist in the population of any species of plant or animal.
- Premise 2
- According to the theory of evolution by natural selection, the anatomical features of today’s plants and animals, and therefore the organisms themselves, have evolved over geological time from less complex forms as the result of the non-random accumulation of the slight, random, and hereditary, anatomical variations that always exist in the population of any species of plant or animal.
- Conclusion
- Life on Earth is the product of evolution by natural selection.
- Chain 5: The god of Judaism, Christianity and Islam exists. [The design (or 'teleological') argument.]
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