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 on exertion is a term used to describe difficulty breathing when engaged in a simple activity like walking up stairs or going to the mailbox. While each person experiences this symptom differently, itâs usually marked by feeling like you canât catch your breath. Normal breathing is relatively slow.