Answer: Which of these is NOT a sex-linked disorder?
D. codominance
Step-by-step explanation:
The correct answer is optionD. Codominance. Codominance is not a sex-linked disorder. Sex-linked disorders are genetic conditions that are associated with genes located on the sex chromosomes (X and Y). Option A, muscular dystrophy, and option C, hemophilia, are both examples of sex-linked disorders. These conditions are more commonly seen in males because the genes for these disorders are carried on the X chromosome, and males only have one X chromosome. Option B, color blindness, is also a sex-linked disorder. It is caused by a mutation in the genes on the X chromosome. However, option D, codominance, is not a sex-linked disorder. Codominance refers to a situation where both alleles of a gene are expressed equally in the phenotype of an individual. It is not specifically related to the sex chromosomes.