In humans,typically only infants produce the enzyme lactase to break down lactose.Some adults have changes in _____ that allow transcription factors to bind and turn on expression of the lactase gene into adulthood.

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Quizplus · Accepted Answer

Changes in enhancers can lead to the activation of lactase gene expression in some adults, allowing them to continue producing lactase and digesting lactose. This is known as lactase persistence. Exons, RNA polymerase, mRNA, and codons are not directly involved in the regulation of lactase gene expression.

In Humans,typically Only Infants Produce the Enzyme Lactase to Break