Function ecosystem how to conduct population studies​

The Axiom Biobank Genotyping Solution is a widely adopted platform for large-scale biobank genotyping studies. Many of the world’s largest population genetic epidemiology projects have chosen Affymetrix products for their genotyping studies. Axiom Biobank Genotyping Arrays include pre-designed and custom arrays. Custom arrays use a modular content for rapid design and customization of genotyping arrays to meet your study needs. The content modules exist within the Axiom Genomic Database of over 26 million SNPs and insertion-deletions (indels). These modules can be combined into an array design, and each module can be modified by adding, removing, or replacing content.

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.