Difference between revisions of "Template:Introduction to genetics glossary"
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Revision as of 18:06, 24 January 2018
| Genetics glossary |
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They form the rungs of the DNA ladder and are the repeating units in DNA. There are four types of nucleotides (A, T, G and C) and it is the sequence of these nucleotides that carries information. |
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A package for carrying DNA in the cells. They contain a single long piece of DNA that is wound up and bunched together into a compact structure. Different species of plants and animals have different numbers and sizes of chromosomes. |
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A segment of DNA. Genes are like sentences made of the "letters" of the nucleotide alphabet, between them genes direct the physical development and behavior of an organism. Genes are like a recipe or instruction book, providing information that an organism needs so it can build or do something - like making an eye or a leg, or repairing a wound. |
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The different forms of a given gene that an organism may possess. For example, in humans, one allele of the eye-color gene produces green eyes and another allele of the eye-color gene produces brown eyes. |
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The complete set of genes in a particular organism. |
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When people change an organism by adding new genes, or deleting genes from its genome. |
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An event that changes the sequence of the DNA in a gene. |