A phenotype is a trait we can observe. Genes carry instructions, and the result of our body following those instructions (for example, making a pigment in our eyes), is a phenotypic trait, like eye color.
The medical term for expanding or opening wider is. apnea. the medical term for lack of or absence of breathing is. tissue. the medical term for groups of cells with the same function is. cell. the medical term for the basic unit of body structure is. menarche.
shortness of breath a sign of low body o2 difficulty breathing also known as dyspnea or shortness of breath is a symptom in which a patient suffers from breathing problems the condition is accompanied with an awareness of one s own breathing because it is too heavy and gives you an unpleasant experience especially with chest pain