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Genetics and Evolution are central to modern biological understanding. Genetics itself is a huge, rapidly changing field and can be divided into several main categories.

Genetics

However, this kind of division is very arbitrary and heavily influenced by historical progression of the different sub-fields. There are additional large fields that could be listed, but are not as primary as the divisions above (and some suffer from hyperbole), such as:

I am purposely avoiding dividing the field by taxonomy (except for human genetics and related fields). The classical taxonomic divisions of biology are losing their usefulness. A large part of this is due to genetics and evolution where the same basic principles can apply across a wide range of organisms. I am also avoiding separating genetics and genomics, some tools and approaches may be different but these are really ends of a continuum that has been artificially exaggerated.


One way to get started is by reading about what a gene is, genetic heritability versus environmental effects on phenotype variance, and the structure of DNA.


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