Yulin Huang1, Ping Lin1

  • 1Biological Science Research Center, Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City, Chongqing Technology Innovation Center of Breeding, Academy for Advanced Interdisciplinary Studies, Southwest University, Chongqing 400715, China.

Cell genomics
|January 10, 2026
PubMed

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Structure of a Gene01:30

Structure of a Gene

A gene is the fundamental unit of heredity. Every individual has two copies of each gene, one inherited from each parent. Although most people contain the same genes, there is a small fraction that is slightly different amongst people. A gene with a small difference in its sequence of DNA bases forms different alleles, contributing to different phenotypes.
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Genetic Screens02:46

Genetic Screens

Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing  genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...
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