According to recent research, carriers of recessive gene mutations, even with only one affected copy, may face subtle health challenges and reduced reproductive success, contradicting traditional understanding. A study of over 300,000 people suggests that individuals carrying recessive genes for intellectual disability are particularly affected, exhibiting shorter educational paths and a higher likelihood of remaining childless. These findings challenge existing genetic theories and imply that both natural and sexual selection continue to influence the human genome through these seemingly silent gene variations. The research posits that while the majority of intellectual disabilities arise from spontaneous mutations, the absence of expected recessive mutations in the population points to evolutionary pressures acting against carriers.https://neurosciencenews.com/recessive-genes-evolution-neurosciencce-28937/