Category: M
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Mutator genes
Genes that increase the frequency of mutations in other genes.
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Mutation rate
The chance of occurrence of a mutation in a given length of time.
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Mutation pressure
A constant mutation rate that adds mutant genes to a population.
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Mutation, directed, or specific
A mutation with a specific environmental cause.
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Mutagenic effect
A production of a sudden change in the parent’s genes that appears in the offspring due to a chemical or physical force, mutagenic.
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Mutable genes
Those genes with an unusually high mutation rate.
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Musculoskeletal system
The structural and functional independence of the muscular and skeletal systems. Network of bones, muscles, joints, and associated tissues (e.g., ligaments and tendons) of the body involved in the maintenance of body form and movement. The muscles, bones, and joints that form the moving structural frame of the body.
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Muscular endurance exercise
Repetitive, submaximal muscular contractions measured by the time to fatigue and performed by the major muscle groups of the body.
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Muscle tone
A tension or slight contraction of the muscle. The firmness of a muscle group in a relaxed state. A characteristic of a muscle brought about by the constant flow of nerve stimuli to that muscle, which describes its resistance to stretching. Abnormal muscle tone can be defined as: hypertonus (increased muscle tone, as in spasticity);…
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Muscle-tension-relaxation exercise
An exercise that uses progressive tension-relaxation to reduce the effects of stress.