Patterns of sex-linked transmission Transmission of a gene from a male parent to his daughter and then to his grandson (through the daughter) is termed what?

Introduction / Context:Sex-linked traits often display characteristic transmission patterns across generations. Recognizing these patterns allows quick identification of X-linked recessive or dominant inheritance in pedigrees.

Given Data / Assumptions:

• Male → daughter → daughter’s son transmission is described.
• Sex chromosomes: males are XY, females XX.
• No statement contradicts viability or dominance; the focus is the path of transmission.

Concept / Approach:Criss-cross inheritance is typical for X-linked traits: a father passes his X chromosome to all daughters (never to sons). A daughter can then pass that X allele to her sons, producing the “male → daughter → grandson” path. Holandric inheritance is Y-linked (father to all sons), which does not match the pattern here.

Step-by-Step Solution:

Verification / Alternative check:Pedigree analysis examples of hemophilia or color blindness demonstrate this pattern repeatedly.

Why Other Options Are Wrong:

• Holandric: Y-linked goes father → son only.
• Quantitative: polygenic traits; not a transmission path term.
• Maternal inheritance: mitochondrial/cytoplasmic, passed from mothers to all offspring.
• Autosomal dominant: does not impose the sex-specific path described.

Common Pitfalls:Assuming all sex-linked traits are father-to-son; X-linked cannot go father-to-son because fathers pass Y to sons.

Final Answer:Criss-cross inheritance