Cystic fibrosis is a recessive hereditary disease. The parents of children who have cystic fibrosis each carry one normal CFTR gene and one mutated CFTR gene. Choose the numbers to finish the sentence. If both parents each carry one mutated CFTR gene,

of their children will probably have cystic fibrosis,

of their children will probably be carriers, and

of their children will probably not have cystic fibrosis or carry the mutated gene.

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.

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