A mutation takes place in a gene that determines the shape of a cat’s ears. This mutation causes the cat’s ears to be curled instead of pointed. Information in the gene leads to the observable trait of curled ears. Anita has begun a flow chart that shows the main steps in this process, as shown. 5. Write the main steps to complete the flow chart to show how information in the gene leads to the expression of the trait.
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Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.