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Genetics
Study Guide for Genetics Bundle
| Term | Definition |
|---|---|
| Beneficial | Producing or promoting a favorable result; advantageous |
| Chromosome | A single, highly organized and structured piece of DNA |
| Gene | The basic physical and functional unit of heredity made up of DNA |
| Genetic Variation | The variety of gene combinations that exist within a population |
| Mutation | A change or damage in the DNA that permanently alters the genetic message that the gene carries |
| Proteins | Biomolecules made up of amino acids and found in all living cells that perform bodily functions |
| Sexual Reproduction | The reproductive process involving two parents whose genetic material is combined to produce a new organism different from themselves |
| Artificial Selection | The process by which humans breed other animals and plants for particular traits |
| Genetic Engineering | The direct manipulation of genetic material to alter the hereditary traits of a cell, organism, or population |
| Offspring | Product of reproduction; a new organism produced by one or more parents |
| Selective Breeding | A form of artificial selection where humans deliberately breed plants and animals for desired traits |
| Trait | A characteristic of an organism; can be genetic or acquired |
| Neutral Mutations | A change in eye color, or sometimes hair or skin color |
| Mutations in Humans | Could be harmful mutations, beneficial mutations, or neutral mutations |
| Beneficial Mutation | Lactose Tolerance, |
| Cause of Mutation | The amino acid sequence coded by a gene is altered and a defective protein is produced. |
| Types of Mutations | Deletion, Insertion, Inversion, Point, and Substitution |
| Reasons for Artificial Selection | To create a viable food source for a newly colonized planet, to help make drought-resistant crops, or to help keep a species from going extinct |
| Gene Therapy | Transplanting genes into cells to replace defective or missing genes |
| Anatomy | The study of the structures of organisms and their parts |
| Comparative anatomy | The study of the similarities and differences of body structures of different species |
| Species | A group of organisms with similar characteristics that are able to interbreed or exchange genetic material |
| Common Ancestor | When organisms are descended from a single ancestor |
| Evolve | To change the frequencies of alleles (genes) in a population over time, leading to a change in characteristics |
| Adaptation | A process by which a population becomes better suited to its environment by increasing the frequencies of alleles that provide benefits to survival and reproduction |
| Favorable Trait | A trait that is beneficial to an organism and will likely be chosen by natural selection |
| Generation | Organisms of the same species that are at the same level of descent from a common ancestor; a parent is a member of one generation, and its offspring are members of the next generation |
| Genetic Variation | The variety of gene combinations that exist within a population |
| Natural Selection | Process by which organisms with favorable traits produce more successful offspring than organisms with less-favorable traits, causing the favorable traits to become more common in the population |
| Population | A group of interacting individuals of the same species located in the same area |
| Trait | A characteristic of an organism; can be genetic or acquired |