After a Long Period of Gradual Evolution of Protein Domains

question 76

Multiple Choice

After a long period of gradual evolution of protein domains, a period of explosive change (the "big bang") in protein domain complexity occurred at roughly the same time as the 3 taxonomic domains were undergoing rapid diversification.  In which taxonomic domain was this diversification most extensive?

• A)Eukarya
• B)Protista ​
• C)Archaea ​
• D)Animalia ​
• E)Bacteria ​

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Definitions:

Fluctuating Climates

Refers to the variations and changes in the climate patterns over time.

Plant Communities

Groups of plants that live together in a specific habitat and interact with each other, forming a sort of ecological community.

Endosymbiont Theory

The theory that explains the origin of organelles like mitochondria and chloroplasts in eukaryotic cells, suggesting they were once independent prokaryotic organisms.

Mutualistic Relationships

Ecological interactions where both species involved benefit and often depend on each other for survival.