Which mode of transmission occurs when a trait is controlled by a recessive gene on the X chromosome?

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Traits controlled by a recessive gene on the X chromosome are more commonly expressed in males than in females because males have only one X chromosome. Thus, if a male inherits an X chromosome with a recessive trait, he will express that trait, whereas females, having two X chromosomes, would need two copies of the recessive gene to express the trait.

Which Mode of Transmission Occurs When a Trait Is Controlled