Darwin & Mendel: A Historical Comparison

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Discussion Overview

The discussion explores the historical relationship between the theories of Charles Darwin and Gregor Mendel, particularly how knowledge of Mendelian genetics might have influenced Darwin's evolutionary theories. The scope includes historical context, theoretical implications, and the interplay between genetics and evolution.

Discussion Character

  • Historical
  • Debate/contested

Main Points Raised

  • One participant suggests that if Darwin had known about Mendel's research, it could have led to a more robust understanding of inheritance in his writings.
  • Another participant points out that Darwin likely had little to no knowledge of Mendel's work, given the timeline of their research.
  • A different viewpoint proposes that Mendelian genetics would have prompted a reevaluation of Darwin's "survival of the fittest" concept, emphasizing the complexity of genetic inheritance and its implications for evolutionary success.
  • One participant argues that the understanding of genetic variation introduced by Mendel contradicts the notion that success in one generation guarantees survival in the next, suggesting a more nuanced view of evolution.

Areas of Agreement / Disagreement

Participants express differing views on the extent to which Darwin's theories would have changed with knowledge of Mendelian genetics. Some agree that it would have impacted his work, while others emphasize the lack of awareness Darwin likely had regarding Mendel's research.

Contextual Notes

The discussion highlights the limitations of historical knowledge and the assumptions regarding the influence of genetics on evolutionary theory, without resolving the implications of these factors.

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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