Why is the knowledge about atoms necessary and how is it applicable to your day to day life

What factors contribute to the effect an environmental toxin has on the human body?

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.

A. describe the scientific method, using pasteur's swan-necked flask experiment as an example.