Dominant inheritance occurs when a variant gene from one parent causes disease, even though the matching gene from the other parent is normal But in recessive inheritance, both matching genes must be variant to cause disease If only one gene in. In humans, there are hundreds of genes located on the x chromosome that have no counterpart on the y chromosome This type of inheritance has certain unique characteristics, which include the following The inheritance and presentation of all three differ depending on the sex of both the parent and the child
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