Give an example of a more specific, testable hypothesis for the larger spleen size and how it may contribute to the extraordinary diving abilities of the Bajau.
(a) Bajau individuals with larger spleen sizes have a higher concentration of oxygen-storing red blood cells, leading to prolonged breath-holding capabilities during dives.
(b) Bajau individuals with larger spleen sizes exhibit lower levels of lactic acid buildup in their muscles, resulting in reduced fatigue and increased endurance during dives.
(c) Bajau individuals with larger spleen sizes have more efficient gas exchange mechanisms in their lungs, allowing for enhanced oxygen absorption and utilization during dives.
(d) Bajau individuals with larger spleen sizes experience slower heart rates and reduced metabolic rates underwater, conserving oxygen and extending dive times.