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"When someone says that a medical condition 'runs in the family', they usually mean that one or more people in their family have the condition.\r\nIn some cases, those conditions can be the result of genes that parents pass on to their children. When this happens it’s called an inherited condition.\r\n\r\nGenes give the instructions about how our bodies look and how our bodies work. Genes are packaged into structures in our cells called chromosomes. Chromosomes are found in each cell’s DNA.\r\n\r\nSometimes there are changes in the pattern of the genes that are passed from a parent to their child. In other cases, there can be extra or missing chromosomes in the genes that are passed from a parent to a child.\r\n\r\nThese changes may cause physical or mental disabilities.\r\n\r\nExamples of inherited conditions include cystic fibrosis and muscular dystrophy."
<https://readyornotalberta.ca/ready/seeing-an-expert/genetic-risk/>