DNA Sequencing or genetics in general
Answer:
The answer is b) Breaks in the mucosa and presence of corrosive secretions
Explanation:
The peptic ulcer disease is likely caused by the weakening of the mucosa coating by H. Pylori bacteria (or other types of drugs), and the passage of corrosive secretions (such as acid and pepsin) to the lining that is beneath the mucosa coating.
It really depends, think of it as 2 light bulbs in each parent. if both light bulbs in both parents are switched on that means their genes that they inherited are only able to have brown eyed babies, although if just 1 of the 4 light bulbs are not on it allows the baby to have blue eyes.