coupling

coupling /coup·ling/ (kup´ling)

1. the joining together of two things.

2. in genetics, the occurrence on the same chromosome in a double heterozygote of the two mutant alleles of interest.

3. in cardiology, serial occurrence of a normal heartbeat followed closely by a premature beat.

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cou·pling (kplng)

n.

1. The act of uniting sexually.

2. See bigeminal rhythm.

3. The configuration of two different mutant genes on the same chromosome, leading to the likelihood they will both either be inherited or omitted in the next generation.

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coupling

1. in an animal's conformation, the distance between the top of the scapulae to the hip joints.

2. in ultrasonography, the transmission of sounds from the transducer into the tissues being examined. A medium such as a gel or mineral oil is used to exclude air from between the two surfaces.