Weegy: C. Chromosomes carry the codes for hereditary traits. BEST describes chromosomes.
User: When describing Down syndrome, it's important to note that __________.
it can be classified as a single-gene disorder
it is caused when red blood cells cannot properly form hemoglobin
it causes infected males to have low testosterone levels
it is usually caused by three copies of chromosome 21
Weegy: The answer is ... (More)