We talked about the genes controlling our ability to digest lactose, the sugar found in milk....

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Biology

We talked about the genes controlling our ability to digestlactose, the sugar found in milk. Collectively the enzymes producedby the set of genes involved are called lactase. \"Lactoseintolerance\" describes the most common condition in human adults,which is an inability to digest lactose because lactase is notproduced. These people could all produce lactase as infants,however, so they have the genes needed to produce functionalenzymes. Somehow the regulation of expression of the genes changesas most people grow up.
People who can digest lactose as adults are said to be \"lactasepersistent\", that is, they continue to produce lactase even inadulthood. Ponder the genetic mechanisms for regulating theexpression of the genes producing lactase and describe threefeasible hypotheses for mutations affecting the regulatingmechanisms that would enable a person to produce lactase as anadult.

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Lactose Intolerance Lactose intolerance may be caused due to various reasons like 1 Inherited lactose intolerance genes of lactase deficiency is inherited It may be further subdivided as a Primary lactase deficiency In this case lactase deficiency occurs gradually or declines after a certain age This is the most common type of lactose intolerance and is also called lactose on persistence This may occur at any age but usually observed above the age of six years b Congenital lactase See Answer

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