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Updated: Sep 24, 2026

Measuring Lactase Enzymatic Activity in the Teaching Lab
Published on: August 6, 2018
A family study of lactose tolerance
Abstract:
Survey data from 38 families consisting of both parents and at least one biological offspring provided no support for the belief that lactose tolerance resulted from having at least one dominant gene on an autosomal gene pair and did not support the belief that Caucasians are more frequently tolerant of lactose than are persons of Oriental or of mixed Caucasian-Oriental ancestry.
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Operons
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Inducible Operons: lac Operon