Are you talking about the esophagus?
Answer:
Substitution Mutations
Explanation: A substitution mutation occurs when specific bases (A, T, C or G) in a gene are swapped for different ones. This type of mutation doesn't cause a difference in the number of bases like insertion or deletion mutations do. Substitution mutations just switch out one or more bases for different ones.
Hope this helps :3
I don't know what you mean by your question, but if you are making an appropriate title it will be good if you title it that is unique and would want to make your reader more interested with your story. Just trying to help :)
Explanation:
<em><u>A substance that enters into and is altered in the course of a chemical reaction.</u></em>
<em><u>hope </u></em><em><u>are </u></em><em><u>you </u></em><em><u>understand</u></em>
