You do have an active imagination. Why you think discrimination is not okay because someone has a 'gene' but okay when someone doesn't have a gene baffles me
But meanwhile lets go onto that 'gene' for left handedness
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Left-handedness stumps science | Fox News
Genes or environment?
While several researchers have found a few genes implicated in handedness, many genes are probably at play.
And the environment clearly plays a big role: Identical twins often have different dominant hands, Llaurens said.
About half of left-handedness may be a byproduct of damage during fetal development or birth, Coren told LiveScience. Studies have found southpaws have higher rates dyslexia,
schizophrenia and immune problems, such as allergies and lupus.
To explain this, scientists have proposed that all people are wired to be right-handed, but damage to the brain has the unintended side effect of forcing the brain to rewire to be left-hand dominant, he said.