Final answer:
The mutation on a man's sex chromosomes stems either from his mother or father based on which sex chromosome (X or Y) the mutation is observed in. Men get their X chromosome from their mother and their Y chromosome from their father. Therefore, an abnormality or mutation in the X chromosome would have come from the mother, and a mutation in the Y chromosome would have come from the father.
Step-by-step explanation:
The determination of whether the mutation on a man's sex chromosomes came from his father or mother can primarily be deduced from understanding of basic genetic principles. As men have XY sex chromosomes, they get their X chromosome from their mother and their Y chromosome from their father. If an abnormality is present on the X chromosome, it would indicate that it came from the man's mother. However, if the abnormality is on the Y chromosome, it signals that it came from the man's father. Since a picture or diagram is not provided, it's not possible to conclusively answer this question. However, these are the general principles applicable to such a scenario.
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