It is said that none of the 45 jeans should contest?

I am jain, i love one girl from our caste ,her mothers family surname and my mothers line surname is same?
now i be was not knowng her untill i met her , she is not related to me , however everyone is sayng it will be like brother sister conjugal! also people collaborate about genetic problems due to blood relation . we dont dnt know contained by which generation we be related ! so how can we be relatives? The genetic test is also stomach-ache ful please help me outIt is said that none of the 45 jeans should contest?
This really looks funny to me. Wikipedia say that there are hundreds of genetic test available. It can be done on parts of you that won't hurt. "Genetic tests are perform on a sample of blood, spike, skin, amniotic fluid (the fluid that surrounds a fetus during pregnancy), or other tissue. For example, a medical procedure called a buccal smear uses a small brush or cotton swab to collect a taster of cells from the inside surface of the cheek. The example is sent to a laboratory where technicians look for specific change in chromosomes, DNA, or proteins, depending on the suspected disorder. The laboratory reports the audition results in writing to a person's doctor or genetic counselor."
It seem a bit funny that counselling would be required as part of the theory test. I can understand that if nearby were any prior concerns roughly reasons for getting one, counselling might run along with that, but wouldn't that be arranged by somebody you trust who know your circumstance? I don't know why somebody is advising you to filch a test that hurts.
I don't reflect on that scientists are telling us everything within is to know about genes and their uncertainty anyway. Just go by your heart, I suggest.