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Related Concept Videos

Behavioral Genetics and Its Designs01:23

Behavioral Genetics and Its Designs

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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.
The primary methodologies used in behavior genetics include family studies, twin studies, and adoption studies, each providing unique...
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Human Genetics01:28

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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.
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Incomplete Dominance01:43

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Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
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Genomic Imprinting and Inheritance02:30

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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Heritability01:06

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Heritability is a statistical concept that measures the degree to which genetic differences among individuals contribute to trait variations within a population. It is a fundamental idea in genetics, often prone to misinterpretation. Heritability is expressed as a percentage, reflecting the proportion of variation in a specific trait across a population that can be linked to genetic differences. However, it's important to understand that heritability does not determine how "genetic"...
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Comparing Copy Number Variations and SNPs02:26

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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
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Top 10 Replicated Findings From Behavioral Genetics.

Robert Plomin1, John C DeFries2, Valerie S Knopik3

  • 1Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King's College London robert.plomin@kcl.ac.uk.

Perspectives on Psychological Science : a Journal of the Association for Psychological Science
|January 29, 2016
PubMed
Summary
This summary is machine-generated.

Behavioral genetics research has identified 10 robustly replicated findings, including the increasing heritability of intelligence and significant environmental influences. These discoveries highlight the power of genetically sensitive designs in psychological science.

Keywords:
DNAcognitive abilitiesheritabilitypersonalitypsychopathology

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Area of Science:

  • Behavioral genetics
  • Psychological science

Background:

  • Concerns about replication in psychological science are widespread.
  • Behavioral genetics offers robust findings that have strong potential impact.

Purpose of the Study:

  • To describe 10 robustly replicated findings from behavioral genetic research.
  • To highlight the significance of these findings for psychological science.

Main Methods:

  • Review of established findings in behavioral genetics.
  • Analysis of effect sizes and impact of key discoveries.
  • Focus on genetically sensitive research designs.

Main Results:

  • Identification of 10 major replicated findings.
  • Demonstration of linearly increasing heritability of intelligence from 20% in infancy to 60% in adulthood.
  • Discovery of four significant findings related to environmental influences, uniquely identified through genetic research designs.

Conclusions:

  • Behavioral genetics provides robust and replicable findings.
  • Genetically sensitive designs are crucial for understanding both genetic and environmental influences.
  • These findings have substantial implications for the broader field of psychological science.