Packet 6: Bonus 7
This selection’s “intra-” form is often propagated by male-male combat in fish. For 10 points each:
[10e] Name this form of selection in which reproductive success depends on the success of choosing a mate.
ANSWER: sexual selection [accept intrasexual selection]
[10m] Groups of this fish called jacks avoid male-male combat by beginning their breeding cycle 12 months before their larger counterparts. The sperm DNA of this fish and herring can be used as a blocking agent during blotting.
ANSWER: salmon [or Salmonidae; accept coho salmon or Oncorhynchus kisutch]
[10h] In Siamese fighting fish, male-male combat begins with the combatants extending these structures to signify aggression. “Flaring” of these bony coverings typically results in irreparable damage to the gills.
ANSWER: operculum [or opercula; accept opercular flare]
<KN, Biology> | NAFTA-Packet-6
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 43 | 15.12 | 84% | 47% | 21% |
Conversion
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| 2026 NAFTA at Stanford | 01/17/2026 | ✓ | 4 | 12.50 | 100% | 25% | 0% |
| 2026 NAFTA at UBC | 01/17/2026 | ✓ | 2 | 20.00 | 100% | 100% | 0% |
| 2025 NAFTA Online | 02/14/2026 | ✓ | 4 | 22.50 | 100% | 75% | 50% |
| 2026 NAFTA at Vanderbilt | 02/14/2026 | ✓ | 3 | 13.33 | 67% | 33% | 33% |
| 2025 NAFTA at Toronto | 09/13/2025 | ✓ | 5 | 12.00 | 60% | 40% | 20% |
| 2025 NAFTA at Maryland | 09/27/2025 | ✓ | 5 | 14.00 | 100% | 40% | 0% |
| 2025 NAFTA at Harvard | 10/04/2025 | ✓ | 3 | 13.33 | 67% | 33% | 33% |
| 2025 NAFTA at Oxford | 10/11/2025 | ✓ | 4 | 15.00 | 75% | 75% | 0% |
| 2025 NAFTA at Chicago | 11/08/2025 | ✓ | 6 | 20.00 | 83% | 50% | 67% |
| 2025 NAFTA at Columbia | 11/08/2025 | ✓ | 5 | 14.00 | 100% | 40% | 0% |
| 2025 NAFTA at Richmond | 12/20/2025 | ✓ | 2 | 5.00 | 50% | 0% | 0% |