Why am I Rh negative when both my parents are positive?

I am always being asked why someone might be Rhesus negative when both their parents are positive. 

A person with Rhesus negative (Rh-) blood can indeed have Rhesus positive (Rh+) parents due to the way the Rh factor is inherited through genetics.

The Rh factor is controlled by a specific gene that has two main variants, or alleles: Rh+ and Rh-. The Rh+ allele is dominant, meaning that if a person inherits at least one Rh+ allele, they will have Rh+ blood. The Rh- allele is recessive, so a person needs to inherit two Rh- alleles (one from each parent) to have Rh- blood.

Here's how it works:

- Rh+ individuals can be either homozygous (Rh+/Rh+) or heterozygous (Rh+/Rh-).

- If someone is Rh+/Rh+, they will pass the Rh+ allele to their children.

- If someone is Rh+/Rh-, they can pass either the Rh+ or the Rh- allele to their children.

Now, if both parents are Rh+, but each of them is heterozygous (Rh+/Rh-), they can each pass on the Rh- allele to their child. When both parents pass the Rh- allele, the child will have Rh- blood.

Here’s how this would look in a genetic cross between two Rh+/Rh- parents:

In this case, there’s a 25% chance the child will be Rh-/Rh-, meaning they will have Rh- blood, even though both parents are Rh+. 

Thus, someone with Rh- blood can have Rh+ parents if both parents are heterozygous for the Rh factor.

As you can see from this when people say they have Pure Serpent Blood meaning they think they are of the Serpent Bloodline, that is very misleading. Someone is only Pure Serpent Bloodline if they come from unbroken Serpent Bloodline lines on both sides of their families, with no mixing with anyone who is from a hybrid line. Being of the Serpent Bloodline is more than just a blood type. The Serpent Bloodline is the origin of the O Rh negative blood, but that doesn't mean everyone who has it is one, it just means they have some of the genes. All modern humans apart from some who are pure B positive lines have some Serpent genes. When someone who is a hybrid says they are pure Serpent Bloodline, it is like saying a liger is pure tiger or lion.

And for those who don't understand why the Serpent Bloodline likes to keep pure lines, it is like all tigers or lions completely dying out and only ligers being left. We want to preserve our species, our traditions and our teachings.