What is the relationship between Darwin's ideas and our modern understanding of genetics? Have we found Darwin to be fundamentally correct or incorrect in his understanding of how new species develop?

There is a great relationship between Darwin's ideas and our modern ideas of genetics. Modern ideas of genetics are greatly depend on the Darwin's theory of evolution.

Yes, Darwin is fundamentally correct.

Explanation:

Darwin is also called father of evolution. His theory of evolution provides a base for modern ideas of genetic. According to the Darwin's theory of evolution, those organisms survived which is selected by nature. those organisms remain in the environment which has the ability to survive in the harsh climatic condition while those are eliminated which has low fitness or which are weak. So we can say that Darwin was fundamentally correct.