2025/2026
Exam Prep Guide
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Answers)
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, WGU - C190 WGU - C190
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1. Coevolution The process by which two or more species evolve in tandem by exerting selection
Event pressures on each other
2. Speciation Event A lineage-splitting event that produces two or more separate species.
3. Phylogenetic The evolutionary development and history of a species or higher taxonomic group-
Event ing of organisms. Also called phylogenesis. The evolutionary development of an
organ or other part of an organism
4. Homology Event Shared trait among species
5. Mutation A Mutation occurs when a DNA gene is damaged or changed in such a way as to
alter the genetic message carried by that gene.
6. Gene Flow is the transfer of alleles or genes from one population to another. Migration into or
out of a population may be responsible for a marked change in allele frequencies
(the proportion of members carrying a particular variant of a gene).
7. Genetic Drift is the change in the frequency of an existing gene variant (allele) in a population
due to RANDOM sampling of organisms. Ex. Earthquake or disaster
8. Artificial Selec- The breeding of plants and animals to produce desirable traits
tion
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