NEED HELP ASAP 
 A gene is a segment of DNA that codes for a single protein.
 Question 1 options:
 True
 False
 Question 2 (1 point) 
 Cell differentiation (example a muscle cell is different than a nerve cell) occurs because:
 Question 2 options:
 genes are turned on or off based on the cells needs
 all of the cells contain different genes
 extra genes are added if the cell needs them
 genes are destroyed
 MY ANSWERS ARE A AND D