Page 8 - Genetic Engineering in Health Care - Hi-Tech Health Care

Robert Green notes, “Simply having a

mutation in a disease gene does not

mean you have the disease or will get

the disease.” 4

There are many reasons mutations

occur. Some people are born with missing

genes. This happens when a mistake is

made during DNA replication. Sometimes

mutations happen as people age. Genes

can also be affected by environmental

factors. Exposure to harmful chemicals can

change how genes function. Many of these

changes can lead to disease. Mapping a

person’s genome can help doctors find the

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