Which of the following statements are correct?
(a) The x-linked genes are located on non-homologous region of X-chromosomes?
(b) Females with the recessive gene on one X-chromosome are carriers.
(c) The carrier female is also severely affected by the disorder.
(d) Y-linked genes are located on the homologous region of Y-chromosome.
(e) Human males have homomorphic sex chromosome.
Choose the correct option

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.