Reductive evolution is the a. loss or mutation of DNA encoding unselected traits.
In the field of biology, reductive evolution can be described as an evolution in which microorganisms have the capability to delete certain genes from their genomes.
As a result of reductive evolution, the DNA becomes downsized as a part of DNA is lost.
Reductive evolution is a degenerative kind of evolution by which genes for unselected traits are removed.
In microorganisms, this process usually occurs when the microorganism is engulfed by a predator or when a microorganism is living in a restrictive state.
To learn more about evolution, click here:
https://brainly.com/question/1589147
#SPJ4