Earwax & ABCC11 in 11: Body odor biology and marketing 뿯½ Body odor biology and market

Absolutely not. It is one trait with a known variant. Because inheritance is relatively clean for teaching. The same locus affects apocrine secretions relevant to odor. Culture and marketing dominate; genetics is background. Trait frequencies are weak, ethically fraught ancestry clues — not destiny.

Mostly benign variation; see a doctor for ear disease. Taste-PTC; genetic-structure; race-is-not-biology. Older texts racialized earwax; we reverse that framing. ABCC11 encodes a transporter affecting lipid secretion into earwax and sweat glands. A loss-of-function allele associates with dry, flaky cerumen.

Dry-earwax alleles reach high frequency in parts of East Asia and vary elsewhere. Maps are sampling summaries — individuals are not their continental average. High dry-allele frequency in many East Asian samples — still with exceptions. Frequencies change across Eurasia rather than flipping at race borders.