Answer:
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Step-by-step explanation:
Male cats cannot express the phenotype of being a heterozygous carrier of a sex-linked trait located on the X chromosome because they only have one X chromosome. In male cats, the sex-linked traits are always expressed, whether dominant or recessive, because they have no corresponding gene on the Y chromosome to mask the expression. As a result, any sex-linked trait on the X chromosome is always expressed in male cats, regardless of whether it is dominant or recessive.