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Paternity Testing and Family Relationship DNA Tests

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DNA Inheritance

Surprisingly, there is less genetic diversity across the entire human race than can be found in a few dozen African monkeys.

From this we can speculate that the current human race evolved from a very small group - also known by scientist as as a genetic bottleneck.

We can conclude that at some point some sort of natural catastrophe or climate condition wiped out a large percentage of the prehistoric human population, leaving a small group of survivors from which modern man evolved.

Haemophilia is recessive disease connected to the X chromosome.

Women have two X chromosomes. That is why only females with the recessive gene in both X chromosomes actually develop Haemophilia. If they carry only a single recessive gene then they become carriers (transmitters) of the disease.

In the case of men, it's different.Men have only one X chromosome and if they carry the recessive gene they will also develop the disease.

The Jewish population were well aware of this fact, and did not circumcise sons of women known to be carriers.

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