Question

Sol.(c) [Key Concept: Sex-Linked Dominant — Criss-Cross to Daughters] A trait that passes from father to ALL daughters but NONE of his sons is SEX-LINKED DOMINANT. An affected father (X^D Y) passes his X chromosome (carrying the dominant allele X^D) to ALL his daughters (who receive his X) and his Y chromosome to all his sons. Sons receive Y from father (no X-linked gene from father), so they cannot inherit the trait from their father. This criss-cross inheritance pattern (father → all daughters) is diagnostic of X-linked dominant inheritance.