Hazardous Chemical” Simple Definition -- elements, chemical compounds, or. mixtures of elements and/or compounds which poses potential risk to safety or health. Regulatory Definition - means any chemical which. presents a physical hazard or a health hazard. Laboratory is a place to information about the hazards that are associated with a compound.
Since it's a recessive disorder that means the presence of the dominant allele will overshadow the recessive if it's present. Two recessive alleles have to be present in order for the person to have the disorder.
primary immunodeficiency diseases are present at birth and usually stem from genetic errors, whereas secondary immunodeficiency diseases are acquired after birth and are due to agents such as infections, irradiation, or steroids
