carrier

An individual who possesses one copy of a mutant allele that causes disease only when two copies are present. Although carriers not affected by the disease, two carriers can produce a child who has the disease. See also allele, mutation, heterozygous, homozygous

An individual who possesses an unexpressed, recessive trait.

A heterozygous individual bearing a recessive mutant allele for a defective condition that is "masked" by the presence of the dominant normal allele; the phenotype is normal, but the individual passes the defective (recessive) allele to half of its offspring.

In a frequency stabilized system, the sinusoidal component of a modulated wave whose frequency is independent of the modulating wave; or the output of a transmitter when the modulating wave is made zero; or a wave generated at a point in the transmitting system and subsequently modulated by the signal; or a wave generated locally at the receiving terminal which when combined with the side bands in a suitable detector, produces the modulating wave. [47CFR] Synonym common carrier.

A company that provides transportation services, such as motorcoach companies, airlines, cruise lines, and rental car agencies.