Darwin & Mendel: A Historical Comparison

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SUMMARY

The discussion centers on the hypothetical impact of Gregor Mendel's genetic research on Charles Darwin's theories of evolution. Participants assert that had Darwin been aware of Mendelian genetics, particularly the principles of inheritance established between 1856 and 1863, he could have refined his concepts, particularly the "survival of the fittest" theory. The conversation highlights that Darwin's lack of knowledge about genetic variability and inheritance may have limited the depth of his evolutionary explanations, suggesting that Mendel's work could have introduced a more nuanced understanding of trait inheritance and species diversity.

PREREQUISITES
  • Understanding of Mendelian genetics and its principles
  • Familiarity with Darwin's "Origin of Species" and its key concepts
  • Knowledge of evolutionary biology terminology
  • Awareness of historical context regarding the timeline of Darwin and Mendel's research
NEXT STEPS
  • Research the principles of Mendelian genetics and their implications for evolution
  • Study the historical timeline of Darwin's and Mendel's contributions to biology
  • Explore modern interpretations of Darwinian evolution in light of genetic discoveries
  • Investigate the concept of genetic drift and its role in evolutionary theory
USEFUL FOR

Students of biology, historians of science, educators, and anyone interested in the intersection of genetics and evolutionary theory will benefit from this discussion.

JimmyRay
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If Darvin knew about genetics or even about what mendel was researching, how do you think it would have changed his theories?
 
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First of all, his name is Darwin, not Darvin.

Assuming that Mendelian genetics were known in his time he would have been able to write a sounder book; the fact that like everyone else he was hazy on inheritance of traits is a shortcoming in hindsight. It would certainly not have led him away from evolution.
 
Since most of Mendel's studies were between 1856 to 1863 (although he had a couple of prior papers published around 1854 and Darwin's "Origin of Species" was published in 1859), I would doubt that Darwin had much knowledge, if any, of Mendel's work on plant hybridization.

I agree with SA.
 
I think it would have had an effect on some of the mechanisms that Darwin proposed for Evolution to be sure. For example, the "survival of the fittest" theory would deserve another look as no one organism hands down 100% of it's genetics to it's offspring even if it breeds within it's own species (the genetics of the offspring would depend on the chosen mates genepool, the probability of a certain mixture coming out for anyone child, and many other factors beyond an organisms "fitness" all introduced from Mendel forward).

In other words, thanks to Mendel we know that a very successful organism can be the carrier to many flawed genes that can lead to less than successful offspring (whereas in Darwin's explanation success in one generation directly leads to survival in the next if the environment remains mostly static...which if it were true would mean that most of the diversity on Earth would have long since become extinct...).
 

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