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Download 1) Genetics Vocabulary
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Chapter 20 – Genetics Vocabulary Asexual Reproduction – type of reproduction, such as budding or regeneration, in which a new organism is produced from a part of another organism by mitosis Cloning – making copies of organisms, each of which is a clone that receives DNA from only one parent. DNA – a chemical inside cells that contains hereditary information and controls how an organism will look and function. Fertilization – process in which sperm and egg join, resulting in a new organism. Gene – small section of DNA on a chromosome that carries information about a trait. Genetics – the study of how traits are passed from parent to offspring. Heredity – passing on traits from parents to offspring. Meiosis – process in which sex cells are formed in reproductive organs; involves two divisions of the nucleus, producing four sex cells, each having half the number of chromosomes as the original cell. Mitosis – cell division process in which DNA in the nucleus is duplicated and the nucleus divides into two nuclei that contain the same genetic information. Mutation – change in a gene or chromosome that can result from something in the environment or an error in mitosis or meiosis. Can be harmful, neutral, or beneficial and adds variations to the genes. Sexual Reproduction- a type of reproduction in which a new organism is produced from the DNA of two sex cells (sperm and egg) Variation – different ways that a trait can appear – for example, differences in height, hair color, or weight.