Fruit flies produce offspring relatively fast and have specific traits, such as eye color and body color/shape. They are easy to observe and their traits are easily traced throughout the next generations.
They make proteins, synthesis of proteins
The answer is A hope this helps .................................................just to fill in some space
In the lock and key model of enzyme action, the substrate fits into the active site of the enzyme, then after undergoing a conformational change, it will release the substrate and produce a product.