A student became ill on three occasions throughout the year. Each time, he was prescribed the same antibiotics since he was diagnosed with the same illness. What will likelyhappen if the student becomes ill again, and the same antibiotics are prescribed?

4. multiple crosses were made between true-breeding lines of black and yellow labrador retrievers. all the f1 progeny were black. when these progeny were intercrossed, they produced an f2 consisting of 91 black, 39 yellow and 30 chocolate. a. propose an explanation for the inheritance of coat color in labradors. b. propose a biochemical pathway for coat color determination and indicate how the relevant genes control coat coloration.