Sickle cell anemia is a disease whose phenotype includes not only anemia, but damage to many different organs. all phenotypes, however, can be traced to a single gene. this is an example of

Which of the following was a social cost associated with the development of the internal combustion engine used in most cars? a. people were able to use their horses for new tasks. b. new jobs were created. c. blacksmiths needed to gain new skills to continue working. d. families were able to travel farther more easily.