So actually summarizing forward growth which parts are genetic and which ones aren't

[reptiles]

There’s ongoing debate among genetic black pillers and environmental black pillers about whether looks are entirely genetic or if the environment plays a modulating role. Let’s clarify what is and isn’t genetic.


Non-Genetic (Environmental) Factors:

1. Sharp, Pointed Chin: I believe this isn’t genetic but tied to bite function. For example, sleep apnea patients often have shallower nasopharyngeal airways, meaning they breathe less effectively, and their faces don’t develop properly. Sleep apnea treatments target the chin first, supporting this. While levels of chin projection vary by race, chin recession is universally unattractive and likely environmental.
2. Forward-Grown Maxilla: The maxilla’s tilt isn’t genetic—it depends on the occlusal plane and facial growth. A downward-slanted maxilla and jaw indicate poor development, which isn’t genetic. Oral posture and chewing from a young age can promote better facial development.
3. Sharp, Angular Jawline: A jawline parallel to the ground reflects proper growth direction, which is entirely environmental.

Genetic Factors:

1. Ear-to-Eye Distance: As shown in the picture, this is genetic. No amount of diet, surgery, or other interventions can change this fixed landmark.
2. Total Maxillary Projection: The midface is one of the most heritable features. Total maxillary projection is genetic, though its forward positioning and angle relative to the face’s proportions are environmental.
3. Mouth Size: This is genetic, tied to biological adaptation to the environment. For example, Black individuals with projected chins still have thick, stocky lips. However, if mouth shape is distorted by chin recession, that’s environmental.
4. Supraorbital Rims, Frontal Bone, and Eyebrow Shape: These are genetic. No amount of environmental influence can change them.
5. Nose Shape: This is entirely genetic and unaffected by environmental upbringing.

Conclusion: Jaw structure, its angle, and midface tilt are environmental, but the total projection and shape of facial features are entirely genetic.