If you rank Yale's pool of admitted students by their L.S.A.T. scores, for example, the scoring gap between the seventy-fifth percentile and the twenty-fifth percentile is so small that the difference between any two students within those limits could conceivably be explained by measurement error.
I rather doubt that this will turn out to be correct, but it illustrates how the persistence of a trait can conceivably be explained by the very factors that make it disadvantageous.
The inhibition of bidirectional motion by apyrase could conceivably be explained by dynein normally stepping towards both the minus and plus end of microtubules through ATP hydrolysis as has been documented in two previous studies of purified motor complexes (Ross et al., 2006; Walter et al., 2012)—with frequent reversals between bouts of motion in each direction.
However, these consumption hypotheses could conceivably be explained by the birth-cohort effects, including the declined incidence of testicular cancer observed in certain western European countries during the Second World War (Moller, 1989), and the subsequent increased incidence thereafter (Chia et al, 2010).
This could conceivably explain why they chose to land their spaceship in the Soviet Union rather than the United States.
Migraine has previously been shown to be associated with central sensitization [23, 24], which may conceivably explain our higher tenderness scores in those with co-occurrence of migraine.
This is reflected by, high mutation rates at NRs than at linker regions, which are depleted of nucleosomes [ 9, 25] and could conceivably explain the frequent occurrence of novel TFBSs in these regions.
Perhaps the most fascinating question in this area concerns what the relationship is, if any, between the profound metabolic abnormalities of SIRT6 knockout animals and the genomic instability conferred by reduced levels of SIRT6 in mouse and human cells; several models could conceivably explain this connection [ 17].
