Equation 7 · Part 1 · Human Evolution Did Not Stop, and Medicine Is Now Steering It
Symbol f
What this part means
f is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
f is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol f→Article meaning
The passage around this formula
…happen to pair up. Layered on top of that structural limit is the fact that PGT operates only within IVF, itself a minority pathway to conception worldwide, so the realized value of the effective screening fraction f across all human conception is far below the illustrative s=1 ceiling used above. Screening’s population-genetic footprint, in other words, is real, directionally opposite to the tiny drift toward higher mutation load discussed earlier, and — on the arithmetic above — slower than either.
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Sources cited in the article section
- [15] Utilization of Preimplantation Genetic Testing in the USA ↗
- [16] Mitochondrial Donation Treatment ↗
These citations provide research context; check each source for the exact claim it supports.