when examining the transmission of phenylketonuria, a recessive trait, we can clearly idenfity . For the child not afflicted with PKU, we can only identify the

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

this was from the link provided:

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .