explain pleiotropy
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Pleiotropy Pleiotropy describes the genetic effect of a single gene on multiple phenotypic traits. The underlying mechanism is that the gene codes for a product that is, for example, used by various cells, or has a signaling function on various targets.A classic example of pleiotropy is the human disease phenylketonuria (PKU).nsourced material may be challenged and removed. (September 2013). Pleiotropy occurs when one gene influences two or more seemingly unrelated phenotypic traits, an example being phenylketonuria, which is a human disease that affects multiple systems but is caused by one gene defect.
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Non-Mendelian Inheritance 3. Pleiotropy (or pliotropy) is the phenomenon in which a single gene conditions several different phenotypical traits. Some phenotypical traits may be sensitive to the pleiotropic effects (for example, inhibition) of other genes, even when conditioned by a pair of alleles in simple dominance.A mixture of pleiotropy and gene interaction is characteristic of these cases.1  Non-Mendelian Inheritance-Image Diversity: pleiotropy.ome phenotypical traits may be sensitive to the pleiotropic effects (for example, inhibition) of other genes, even when conditioned by a pair of alleles in simple dominance. A mixture of pleiotropy and gene interaction is characteristic of these cases. 1  Non-Mendelian Inheritance-Image Diversity: pleiotropy.
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What traits are controlled by multiple alleles? Richard's answer is actually quite wrong. *Pleiotropy* is when a single gene controls/influences two or more seemingly unrelated phenotypic traits. You were looking for ~polygenetic inheritance~ in which a single phenotypic trait is controlled by multiple genes. Some common examples include height, hair and eye color, and predisposition to multifactorial diseases like diabetes or heart disease.
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Periodicity of Lunar Eclipses The mid-point of each eclipse season is separated by 173.3 days which is the mean time for the Sun to travel from one node to the next. The period is a little less that half a calendar year because the lunar nodes slowly regress westward by 19.3° per year.
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- Light enters the pupil, is focused and inverted by the cornea and lens, and is projected onto the back of the eye. At the back of the eye lies the retina, seven layers of alternating cells and processes which convert a light signal into a neural signal (signal transduction). The actual photoreceptors are the rods and cones, but the cells that transmit to the brain are the ganglion cells. The axons of these ganglion cells make up the optic nerve, the single route by which information leaves the eye. B. Structures at the anterior pole of the eye: Moving parts of the eye: 1. The iris is really a shutter that can be closed down to regulate the amount of light entering the eye.
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Inotrope An inotrope (etymology and pronunciation) is an agent that alters the force or energy of muscular contractions. Negatively inotropic agents weaken the force of muscular contractions. Positively inotropic agents increase the strength of muscular contraction. The term inotropic state is most commonly used in reference to various drugs that affect the strength of contraction of heart muscle (myocardial contractility). However, it can also refer to pathological conditions.
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Tropism In botany, the Cholodny–Went model, proposed in 1927, is an early model describing tropism in emerging shoots of monocotyledons, including the tendencies for the stalk to grow towards light (phototropism) and the roots to grow downward (gravitropism).
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- 1 The General Theory of Relativity predicts that light coming from a strong gravitational field should have its wavelength shifted to larger values (a redshift). 2  Once again, detailed observations indicate such a redshift, and that its magnitude is correctly given by Einstein's theory.
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Plyometrics Plyometrics, also known as jump training or plyos, are exercises in which muscles exert maximum force in short intervals of time, with the goal of increasing power (speed-strength).s a result, it is important to distinguish which type of plyometric exercise is used in order to determine its effectiveness and potential to receive the stated benefits. Though the name plyometrics is given to all jumps, not all jumps are plyometric.
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Alice Cooper Today will be a battle of epic proportions between to of the Gods of rock: The Who and the Rolling stones. That's a weird video of Gimme Shelter -- sounds like the instrumental tracks from the album version, but the vocal is different. Even tho' it shows Mick Taylor, all the guitar work is Keith.
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Neuroscience For Kids The words themselves have a strong influence over your ability to say the color. The interference between the different information (what the words say and the color of the words) your brain receives causes a problem. There are two theories that may explain the Stroop effect:1  Speed of Processing Theory: the interference occurs because words are read faster than colors are named.he words themselves have a strong influence over your ability to say the color. The interference between the different information (what the words say and the color of the words) your brain receives causes a problem. There are two theories that may explain the Stroop effect:
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- Robert Plutchik is a psychologist who created a psychoevolutionary theory of emotion. Plutchik identified ten postulates on which his evolutionary theory of emotions is based. Plutchik's wheel of emotion illustrates the relationships between his primary emotions and other related emotions. The eight basic emotions are joy, trust, fear, surprise, sadness, anticipation, anger, and disgust. Plutchik also identified several primary dyads, secondary dyads, and tertiary dyads.
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Piracetam â The Original Nootropic Nootropics are substances that enhance cognition. Often known as smart drugs, they improve memory and increase the ability to focus. In the 1980s, Corneliu E. Giurgea, the inventor of Piracetam, defined a nootropic as a drug that: Enhances learning and memory.
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Polymicrogyria Polymicrogyria is a condition characterized by abnormal development of the brain before birth. The surface of the brain normally has many ridges or folds, called gyri. In people with polymicrogyria, the brain develops too many folds, and the folds are unusually small.The name of this condition literally means too many (poly-) small (micro-) folds (-gyria) in the surface of the brain.Polymicrogyria can affect part of the brain or the whole brain.n people with polymicrogyria, the brain develops too many folds, and the folds are unusually small. The name of this condition literally means too many (poly-) small (micro-) folds (-gyria) in the surface of the brain. Polymicrogyria can affect part of the brain or the whole brain.
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- The study of crippled, stunted, immature and unhealthy specimens can yield only a cripple psychology and cripple philosophy.--- Abraham Maslow. This paper is intended as a preliminary theoretical exploration of the relationship between mental health, value systems and psychotherapy.
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- thixotropy thix·ot·ro·py (thĭk-sŏt'rə-pē) n. The property exhibited by certain gels of becoming fluid when stirred or shaken and returning to the semisolid state upon standing.
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A Handbook for Staffing Practices in Student Affairs Staff development is multifaceted, targeted to many different people in different roles and thus, it must be ever changing. Staff development activities should require thoughtful interaction and reflection couched in a context of requirement of the job. This is more likely to result in desired effects on behavior.
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Understand migraine pathophysiology and allodynia Pathophysiology: What Happens in Your Brain During a Migraine. First, what is pathophysiology? Pathophysiology refers to the changes that occur in the body's systems, resulting in abnormal function, as a result of an illness, a disease, or an abnormal condition such as migraine. Scientists are constantly learning new information about what happens in your brain at the start of a migraine and during a headache. Most of us have probably heard about changes in blood vessels associated with migraine headaches.
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syndrome Pleiotropic: Producing or having multiple effects from a single gene. For example, the Marfan gene is pleiotropic, potentially causing such diverse effects as long fingers and toes (arachnodactyly), dislocation of the lens of the eye, and dissecting aneurysm of the aorta.or example, the Marfan gene is pleiotropic, potentially causing such diverse effects as long fingers and toes (arachnodactyly), dislocation of the lens of the eye, and dissecting aneurysm of the aorta.
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Erving Goffman Frame analysis, then, is the study of the organization of social experience. To illustrate the concept of the frame, Goffman gives the example of a picture frame: a person uses the frame (which represents structure) to hold together his picture (which represents the content) of what he is experiencing in his life.
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Antagonistic pleiotropy hypothesis The antagonistic pleiotropy hypothesis was first proposed by George C. Williams in 1957 as an evolutionary explanation for senescence.[1] Pleiotropy is the phenomenon where one gene controls for more than one phenotypic trait in an organism.[2] Antagonistic pleiotropy is when one gene controls for more than one trait where at least one of these ...
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Pareidolia: Seeing Faces in Unusual Places Pareidolia is a type of apophenia, which is a more generalized term for seeing patterns in random data. Some common examples are seeing a likeness of Jesus in the clouds or an image of a man on the surface of the moon. Famous examples of pareidolia. A prime example of pareidolia and its connection to religious images is the Shroud of Turin, a cloth bearing the image of a man — which some believe to be Jesus — who appears to have suffered trauma consistent with crucifixion.
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- The highlights include: The average age for a child getting their first smartphone is now 10.3 years. Tablets have surged from 26% to 55% usage as kids’ device of choice during car rides. Smartphones trail at 45% (up from 39% in 2012).
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- At least one photon of light must be absorbed in the rods and cones to generate neural signals that the brain can read. This process of transduction depends on specific chemicals called photopigments: the single rod photopigment is called rhodopsin; the three cone photopigments are called iodopsins.t least one photon of light must be absorbed in the rods and cones to generate neural signals that the brain can read. This process of transduction depends on specific chemicals called photopigments: the single rod photopigment is called rhodopsin; the three cone photopigments are called iodopsins.
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- Pleiotropic Effects and Lethal Genes During the first years after the rediscovery of Mendel's laws, a number of experiments were performed that gave results that at first glance did not coincide with the laws. In 1904, a cross was made between a yellow-coated mouse and a mouse with a gray coat.
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- Brain Plasticity--An Overview. To illustrate the concept of plasticity, imagine the film of a camera. Pretend that the film represents your brain. Now imagine using the camera to take a picture of a tree. When a picture is taken, the film is exposed to new information -- that of the image of a tree.
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- Pyrokinesis. 86 pages on this wiki. Pyrokinesis or Fire Manipulation, derived from the Greek words πυρ (pur, pûr meaning, fire) lightning and (κίνησις, kinesis kínesis), meaning motion is the ability to create and. Control fire people with this superpower usually fight by throwing fireballs and creating rings. of fireyrokinesis. 86 pages on this wiki. Pyrokinesis or Fire Manipulation, derived from the Greek words πυρ (pur, pûr meaning, fire) lightning and (κίνησις, kinesis kínesis), meaning motion is the ability to create and. control fire