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What do you mean by environmental factors? The environment drives evolution, so changes in the environment would change who survives, which would lead to evolu
by enkid 5y ago
What do you mean by environmental factors? The environment drives evolution, so changes in the environment would change who survives, which would lead to evolution. If it is an environmental factor that led to selection of individuals having this vein being more likely to propagate, that would still be evolution. This also some very simple scenarios that could lead to such a pressure, like the artery having some minor benefit in reproduction, but a disease we eradicated would disproportionately kill people with the artery.
- deleted 5y ago[deleted]
- OJFord 5y agoThey mean within a lifespan factors, like pollution, diet, lifestyle, etc.
- TrispusAttucks 5y agoEvolution is of a change in the genes. Environmental factors can influence the expression of a gene (think Testosterone or Estrogen) without a change of genetics. The change in expression over time and participant count the study highlights is not compatible with a natural selection driven evolution.
- enkid 5y agoBut this would still present an environmental pressure, which would drive evolutionary change. Maybe not this specific gene, but if the environment is driving changes to our anatomy, it will drive changes in to reproductive fit. Maybe not this specific artery, but some other anatomical change.
- beerandt 5y agoEpigenetics is the missing term here.