... Down’s syndrome11. 45,XY,-14,-21,+t(14q21q) g. Cri-du-chat syndromeh. Klinefelter’s syndrome Problems Section 91. Which of the following chromosome errors would be the most benign relevant ... and Y chromosomes. SHOX is not X-inactivated. Why may Turner (45,X) women have short stature? Problems Section 101.Activation of genes appears to be associated witha. modification of chromosome ... HD allele from his mother.d. The boy’s risk cannot be determined from the information given. Problems Section 121. Which of the hemoglobin designations below best describes the relationship...