Hey there!
Your answer is:
There are alternate versions of a gene.
Hope this helps!
Have a great day! (:
Step 1. mRNA is transcribed in the nucleus, exits to the cytosol through, and binds to a ribosome.
Step 2. Protein synthesis occurs at the rough endoplasmic reticulum.
Step 3. The protein travels by vesicle from one organelle to another inside the cell.
Step 4. The Golgi apparatus processes, sorts, and tags the protein for delivery to its final destination.
Step 5. Exocytosis.
I need more details to answer your question
A) because if you look at the chart, the numbers on the right increase then decrease when it hits 19:00.
Hope this helps!!