The concept of "fixity of species" was a common belief based on a very limited understanding of:
the biblical principle "after its kind"
genetics
taxonomy
paleontology

Taxonomy

Explanation:

The concept of "fixity of species" was a common belief based on a very limited understanding of taxonomy.

A

Explanation:

"Fixity of Species" referred to the unchanging of nature and everlasting presence of life created during genesis. All other terms refer to key components of the formulation of evolutionary theory that are not in line with biblical thinking.

answer; synapse; i believe this is correct,plz check first good luck;