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Genes evolve due to natural selection and genetic drift of the alleles. When a gene is duplicated, the new copy can evolve a new function. gene, unit of hereditary information that occupies a fixed position (locus) on a chromosome.
Context Explanation
Genes achieve their effects by directing the synthesis of proteins. In eukaryotes (such as animals, plants, and fungi), genes are contained within the cell nucleus. Genes are segments of DNA that give your cells instructions for specific traits or body functions. Different versions of the same gene are called alleles.
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Genes NCBI's Gene resources include collections of curated nucleotide sequences used as references, sequence clusters to predict and study homologs, and various databases and tools for the study of gene expression. A gene is the basic physical and functional unit of heredity. Genes are made up of DNA and each chromosome contains many genes. Genes are the basic units that determine the traits that we inherit from our parents. 1 They contain coded information found in nearly every cell of the human body.
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Our genes are made up of DNA, a molecule with this coded information. Genes are specific sections of DNA that have instructions for making proteins. Proteins make up most of the parts of your body and make your body work the right way. You have two copies of every gene. You inherit one copy from your father and one copy from your mother. Genes are passed from parents to offspring and contain the information needed to specify physical and biological traits.
Most genes code for specific proteins, or segments of proteins, which have differing functions within the body.