For threshold traits the liability for a genetic disorder is distributed among individuals in a normal curve.

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This statement is true. Threshold traits, also known as complex traits or multifactorial traits, are influenced by both genetic and environmental factors. The liability for a genetic disorder is distributed among individuals in a normal curve, with some individuals being at higher risk and others at lower risk. This threshold concept explains why some individuals may exhibit a certain disorder or trait while others do not, even if they have similar genetic backgrounds.

For Threshold Traits the Liability for a Genetic Disorder Is