Human Biology - Lactose Intolerance

When the human organic structure is un equal to(p) to digest or attract the sugar in milk known as lactose, a person is diagnosed with Lactose intolerance. Lactose tolerance is the ability to line the sugar in milk as nutrients for the body. (Medicine Net) The sugar lactose is made of galactose and glucose and for the body to absorb lactose these sugars gravel to be sepa sited. This task is carried out in the small bowel where the enzyme lactase splits the sugars, in some cases people have mortified levels of lactase which make separation of the sugars difficult causing lactose intolerance. The symptoms of this condition are diarrhea, abdominal pain and flatulence, sometimes unwellness and abdominal distention. (Boylston 1988)

Most humans start with a naughty lactase activity and this reduces as they age, Adults with a functional lactase gene have high levels of lactase activity bandage those with a nonfunctional lactase gene experience a decline in lactose tolerance. (Swal downcast DM) Lactase Persistence refers to the rate at which lactase activity decreases is low. The general trend is for the body to have high lactose tolerance, in areas where the population is low and where interbreeding occurs the frequence of a condition increases.



The condition skunk also come into a population because of a summercater in the lactase gene at birth or from a carrier parent to their offspring.(Ingram CJ)

Researchers discovered that the genetic mutations which increase the frequency of Lactose intolerance are much more familiar than they were at the time of European peoples ancestors. DNA sequencing was carried out to posit this by testing 7000-year-old fossils; the sequences did not contain the mutation. Being able to digest milk in todays hostelry is a clear advantage whereas in the past where dairy farm resources from cattle were not available it was not an issue whether or not milk could be digested. It was only advantageous in areas where humans had access to domesticated animals such as cows. The mutation for lactose...If you want to get a full essay, order it on our website: Orderessay



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