What is a gene?: MedlinePlus Genetics

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA and each chromosome contains many genes.

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What is a Genetic Mutation? Definition & Types

How Genes Work: MedlinePlus Genetics

If every cell has the same DNA, how do different types of cells and tissues form? DNA contains thousands of genes, but each cell express

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Solved Unit B MCUse the following information to answer the

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MedlinePlus - Most cancers are caused by genetic changes that arise during a person's life, not inherited from a parent. But a rare form of stomach cancer, called hereditary diffuse gastric cancer

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