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Human Genetics

Human Genetics

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...

Obesity

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in adipocytes...

Behavioral Genetics and Its Designs

Behavioral Genetics and Its Designs

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...

Incomplete Dominance

Incomplete Dominance

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.

Polygenic Traits

Polygenic Traits

When more than one gene is responsible for a given phenotype, the trait is considered polygenic. Human height is a polygenic trait. Studies have uncovered hundreds of loci that influence height, and there are believed to be many more. Due to the high number of genes involved, as well as environmental and nutritional factors, height varies significantly within a given population. The distribution of height forms a bell-shaped curve, with relatively few individuals in the population at the...

Polygenic Traits

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Related Experiment Video

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Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies

Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies

Published on: May 6, 2022

Genetics of obesity.

Eduardo Cuestas¹

¹Department of Pediatrics and Neonatology, Hospital Privado Centro Medico de Córdoba, Academic Unit, School of Medicine, National University of Cordoba, Argentina. ecuestas@hospitalprivadosa.com.ar

Revista De La Facultad De Ciencias Medicas (Cordoba, Argentina)

|September 1, 2010

Summary

Genetic factors significantly influence obesity, but current research in children is inconclusive. Future genetic testing may enable personalized obesity treatments based on individual genetic profiles and environmental factors.

Area of Science:

Pediatric Endocrinology
Human Genetics
Obesity Research

Background:

Obesity results from complex interactions between genetic and environmental factors.
Genetic studies have advanced understanding of body weight regulation.
The leptin/melanocortin pathway is crucial in monogenic obesity.

Purpose of the Study:

To review current genetic research on childhood obesity.
To assess the potential for genetic testing in diagnosing and treating pediatric obesity.

Main Methods:

A narrative review of studies indexed in PubMed, Lilacs, and ScieLo.
Search terms included "obesity" and "genetics" for children aged 0-18 years.

Main Results:

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Sample Preparation to Bioinformatics Analysis of DNA Methylation: Association Strategy for Obesity and Related Trait Studies

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Studies identifying candidate genes for childhood obesity have yielded inconclusive results.

The genetic basis of obesity is complex, involving multiple genetic and environmental elements.

Melanocortin-4 receptor gene mutations show variable obesity phenotypes influenced by environment.

Conclusions:

Large-scale genetic testing for obese children is premature.
Future genetic discoveries may allow for targeted therapies.
Genetic testing could differentiate obesity types for tailored treatment approaches.