What does genetic testing of Y chromosome mean?

Detection of Y-linked genetic diseases.

The pathogenic genes of this kind of genetic diseases are located on the Y chromosome, and there is no corresponding gene on the X chromosome, so these genes can only be passed along with the Y chromosome, from generation to generation, from son to grandson, and so on. Therefore, it is called "all-male inheritance".

trait

(1) The pathogenic gene is only located on the Y chromosome, and there is no obvious recessive distinction. The descendants of the patients are all male, the patients are all male, the women are all normal, and the normal ones are all female.

(2) Pathogenic genes are passed down from generation to generation, and passed from son to grandson, thus having continuity from generation to generation, also known as male limited inheritance.

example

Human external auditory canal hirsutism, duck webbed disease, porcupine disease, etc.