The beakers in this lab have identical pieces of chalk in them. Beaker A is filled with water, beaker B is filled with vinegar, and beaker C does not have any liquid in it. Write a hypothesis that answers the following question: Which liquid causes the chalk to weather more quickly? Be sure to write it as an "if-then" statement!

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human

What do all of the above organisms have in common

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.