If evolution were to reflect an inevitable march of progress, a logical corollary is that modern-day phenomena can be explained by yesterday's precursors.
The formation of the metastable carbides and carbon shells can be explained by the carbon-rich precursor, acetylide clusters.
Mechanistically, the genetic linkage between numbers of vertebrae and teats can be explained by the somites being precursors for vertebrae as well as dermal mesenchyme, the latter inducing mammary gland formation in the overlying surface ectoderm [ 27, 39, 40].
The genetic relation between teat number and number of vertebrae can be explained by the somites being precursors for both vertebrae and dermal mesenchyme, while both the somites and dermal mesenchyme have been shown to contain inductive signals for mammary gland formation.
However, the complete absence of stored monoterpenes in roots could also be explained by the absence of the precursor GPP in that organ.
The osteolysis of Charcot's osteoarthropathy may be explained by our observation that osteoclast precursors from Charcot patients develop into mature osteoclasts that exhibit increased resorptive activity, especially in response to RANKL, unlike the increased resorption in response to bacterial infection, which is not mediated by RANKL [ 17].
Thirty nine miRNAs identified can be explained by processing of characterized common bean precursors.
This condition, marked by mild memory lapses and language problems, is beyond what can be explained by normal ageing and can be a precursor to Alzheimer's and other forms of dementia.
In the remaining four patients (Patients 1, 16, 21, and 31), the accumulation of genetic alterations could not be explained by a linear model, so a hypothetical precursor cell was assumed.
The enhanced yield obtained for diazoacetate 11 f in the one-pot process, in comparison with the direct oxidation of hydrazone 6 f, can be explained by the relative instability of the hydrazone precursor that was found to undergo decomposition upon storage.
