Sickle cell disease results from an amino acid change from valentine to glutamic acid. the result of this amino acid change is a deformed hemoglobin protein that does not carry oxygen well. what type of genetic mutation caused the amino acid change in a person with sickle cell anemia? a. frameshift mutationb. silent mutationc. nonsense mutationd. missense mutation

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.