• BLAST Expect Value (E-Value):
• The E-value describes the number of hits one can expect to see by chance when searching a database of a particular size.
• lower E-value (closer to zero) indicates a more statistically significant match:
• $E = 1$ or higher: Likely a random chance alignment.
• $E \le 10^{-5}$ to $10^{-10}$ (recorded as $10^{-10}$ / $100(-10)$): Highly significant, authentic biological homology.
• nalysis:
• (10^(-10)): Correct. Indicates a high-confidence, non-random biological alignment.

Correct option: (3) 100(-10)

• Ab Initio Structural Prediction:
• Based on Christian Anfinsen's thermodynamic hypothesis (1973): the native, biologically active tertiary conformation of a protein is determined solely by its amino acid sequence.
• Attractive molecular interactions (hydrogen bonding, hydrophobic burial, van der Waals forces, electrostatic interactions) minimize the Gibbs free energy ($G$), driving the molecule to its lowest free energy state (global thermodynamic minimum).
• nalysis:
• (lowest): Correct.

Correct option: (1) lowest