dog was taken to a veterinary clinic because it had become increasingly inactive and lethargic. A blood test determined that the dog had v very low levels of the steroid hormones produced by the adrenal glands, especially cortisol. The veterinarian told the owner that the dog has "a mutation in its cortisol gene". Explain why this characterization is inaccurate, given that steroid hormones are lipids. Speculate on a way that a genetic mutation could result in low levels of steroid hormones.