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.
The normal rhythm of breathing is called [46], whereas difficulty in breathing and shortness of breath is called [47]. A temporary cessation of breathing is [48] and a permanent cessation (unless there is successful intervention) is [49]. Abnormally rapid breathing, which expels CO2 faster than the body produces it, is called [50] and is frequently due to anxiety attacks.