in essence, a gene is an instruction

that tells your body how to work.

The instruction is stored as a code in

the molecule DNA." (96)

theirs come from their parents, and

so on all the way back to the first

living thing that ever existed."(98)

single gene can make you color-blind or give you red hair." (102)

This is true for all living things: The cell of every plant and animal contain

DNA molecules." (105)

peas. Then you will be able to see what DNA looks like."(105)