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Related Concept Videos

Human Genetics01:28

Human Genetics

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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Circadian Rhythms and Gene Regulation02:19

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The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent...
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Understanding Sleep01:11

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Sleep, an essential biological state, involves significant reductions in physical activity, sensory awareness, and interaction with the environment. This complex physiological process is primarily regulated by specific brain regions, notably the hypothalamus and pons, which govern the sleep-wake cycle or circadian rhythm.
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Behavioral Genetics and Its Designs01:23

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Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
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Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
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Noninvasive, High-throughput Determination of Sleep Duration in Rodents
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Genetics of human sleep behavioral phenotypes.

Pei-Ken Hsu1, Louis J Ptáček1, Ying-Hui Fu2

  • 1Department of Neurology, University of California, San Francisco, San Francisco, California, USA; Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, California, USA.

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Summary

Genetic variants can alter human sleep patterns, affecting timing and duration. Studying these genetic factors in families helps identify and understand the biological basis of sleep regulation.

Keywords:
Active phaseCircadian periodCircadian rhythmsCopy-number variationElectroencephalographyFamilial advanced sleep phaseFamilial natural short sleepLinkage analysisMouse modelsRebound sleepRest phaseSequencingSingle nucleotide polymorphismSleep deprivationSleep homeostasisδ Power

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Area of Science:

  • Sleep science
  • Human genetics
  • Behavioral genetics

Background:

  • Quality sleep is essential for human daily functioning.
  • Sleep timing and duration are precisely regulated biological processes.
  • Rare genetic variants can lead to significant deviations in sleep/wake patterns.

Purpose of the Study:

  • To outline methods for investigating the genetic underpinnings of human sleep phenotypes.
  • To explore how genetic variations influence sleep behavior.

Main Methods:

  • Genetic analysis within families exhibiting specific sleep phenotypes.
  • Utilizing family-based studies to identify sleep-associated genetic variants.
  • Employing animal models and biochemical assays to elucidate variant functions.

Main Results:

  • Identification of rare genetic variants linked to deviated sleep/wake onset or duration.
  • Established methods for studying the genetics of human sleep behavior.
  • Provided a framework for understanding the molecular basis of sleep regulation.

Conclusions:

  • Genetic factors play a crucial role in determining human sleep phenotypes.
  • Family-based genetic studies are effective in uncovering sleep-related genes.
  • Further research using diverse methods can deepen our understanding of sleep biology.