Rarest Human Mutations:Probability Comparison

From extra fingers and extra legs to having Mermaid, Werewolf and Tree man syndrome, we shall compare the rarest conditions humanity ever known. What is the probability of giving birth to twins, triplets, quadruplets or even conjoined twins? How many people have the RH Null Golden Blood? How many are born with a superior IQ above 178? Odds of being born with Gigantism? Watch this video to find out.

Disclaimer: This video is for entertainment purposes only, is no scientifically proven and should be used with caution. Numbers presented based on reasonable listed sources, or otherwise calculated from the number of known cases over the total human population, birth odds refer to purely natural odds and not through artificial enhancements. Those listed are mostly physical conditions that are commonly known, many more conditions do exist. Other factors such as radiation or family genetics may alter the odds too.