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 Hemophilia a and b, color blindness, duchenne muscular dystrophy
Vitamin d resistant rickets with hypophosphatemia, some types of ectodermal. That's because these genes are present in different copy numbers in males and females What about genes on the y?
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