Hip dislocation is a genetic problem associated with a certain dog breed. one method of getting rid of this problem in future generations would be a) to cross dogs that have not suffered hip dislocation. b) to introduce genes only from closely-related dogs of the breed. c) to cross a dog that has suffered hip dislocation with one that has not. d) to introduce a gene from a breed in which the problem is less evident

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.