Achild has sickle cell disease (ss) but neither parent is sick. what must be true of her parents’ genotypes?

Which of the following is not a characteristic of carnosaurs? a. long narrow skulls b. strong forelimbs c. horn projecting from their skulls d. none of the above

Why do you think the puppy litter was all dark-haired?

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time