locus
Algebra
(noun)
The set of all points whose coordinates satisfy a given equation or condition.
Biology
(noun)
a fixed position on a chromosome that may be occupied by one or more genes
Examples of locus in the following topics:
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Bandura's and Rotter's Social-Cognitive Theories of Personality
- People with an internal locus of control tend to internalize both failures and successes.
- Many factors have been associated with an internal locus of control.
- People with an external locus of control tend to externalize both successes and failures.
- Evidence has supported the theory that locus of control is learned and can be modified.
- Examples of locus of control can be seen in students.
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Cylinders and Quadric Surfaces
- A quadric surface is any $D$-dimensional hypersurface in $(D+1)$-dimensional space defined as the locus of zeros of a quadratic polynomial.
- A quadric, or quadric surface, is any $D$-dimensional hypersurface in $(D+1)$-dimensional space defined as the locus of zeros of a quadratic polynomial.
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Attribution Theory
- Locus of control refers to the degree to which results are due to factors inside (internal locus of control) or outside (external locus of control) an individual.
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Passage 1.2
- In Thraciā ubi arbor dē terrā vellitur, sanguis ex arbore fluit et umbra eī dicit, “Hic locus periculosus vobis est.
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Antibodies: Classes and Affinity Maturation
- The region (locus) of a chromosome that encodes an antibody is large and contains several distinct genes for each antibody domain— in humans the locus containing heavy chain genes (IGH) is found on chromosome 14, and the loci containing lambda and kappa light chain genes (IGL and IGK) are found on chromosomes 22 and 2.
- The heavy chain locus contains about 65 different variable domain genes, all with differing CDRs.
- Class switching occurs in the heavy chain gene locus by a mechanism called class switch recombination (CSR).
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Epistasis
- A mouse with a recessive c allele at this locus is unable to produce pigment and is albino regardless of the allele present at locus A.
- A gene at a separate locus (C) is responsible for pigment production.
- The recessive c allele does not produce pigmentnand a mouse with the homozygous recessive cc genotype is albino regardless of the allele present at the A locus.
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Panic Disorder and Panic Attacks
- Neurobiological theories of panic disorder suggest that a region of the brain called the locus coeruleus may play a role in this disorder.
- Located in the brainstem, the locus coeruleus is the brain’s major source of norepinephrine, a neurotransmitter that triggers the body’s fight-or-flight response.
- Activation of the locus coeruleus is associated with anxiety and fear, and research with nonhuman primates has shown that stimulating the locus coeruleus either electrically or through drugs produces panic-like symptoms (Charney et al., 1990).
- Such findings have led to the theory that panic disorder may be caused by abnormal norepinephrine activity in the locus coeruleus (Bremner, Krystal, Southwick, & Charney, 1996).
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Surfaces in Space
- Often, these surfaces were the locus of zeros of certain functions, usually polynomial functions.
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Anammox
- To deal with the high toxicity of hydrazine, anammox bacteria have a hydrazine-containing intracellular organelle called the anammoxasome (a compartment inside the cytoplasm which is the locus of anammox catabolism), which is surrounded by an unusual and highly compact ladderane lipid membrane.
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Attribution
- Locus of control.
- Someone's locus of control can be either internal or external.
- An individual with an internal locus of control sees people as active participants in the world, capable of influencing what happens to them.
- Someone with an external locus of control sees the world as happening to people, outside of their control.