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PCS Liv Env
Vocabulary for Topic 3 - Genetic Continuity
Term | Definition |
---|---|
Asexual Reproduction | a method of reproduction in which all the genes passed on to the offspring come from a single individual or parent; identical offspring |
Biotechnology | the combination of technology and biological sciences |
Bond | the chemical link between atoms that hold molecules together; store energy |
Chromosomes | a thick, threadlike structure that contains genetic information in the form of DNA |
Clone | an organism that is genetically identical to the organism from which it was produced (Hint: Molly, the sheep) |
DNA | the material found in all cells that contains genetic information about that organism |
Egg | female sex cell |
Expressed | the way that an unseen gene is seen in an organism as an actual physical trait; the gene is shown |
Genes | a segment of DNA (on a chromosome) that contains the code for a specific trait |
Genetic Engineering | a set of technologies that humans use to alter the genetic instructions of an organism by substituting DNA molecules |
Heredity | the passing of traits from parent to offspring; can't be controlled |
Mutation | any alteration in the sequence of DNA (think Teenage Mutant Ninja Turtles - they were turtles then a change in DNA occurred to make them big) |
Replicate | to copy |
Selective Breeding | the process of choosing a few organisms with desirable traits to serve as the parents of the next generation |
Sexual Reproduction | a method of reproduction that involves two parents to produce offspring that are genetically different from either parent; different offsprings |
Sperm | male sex cell |
Subunit | the section of a DNA molecule that contains a sugar, phosphate, and a base; another name is nucleotide |
Template | the pattern for a new molecule |
Traits | a characteristic that is passed from parent to offspring through the genes |
Genetic Rrecombinatoin | formation of a new combination of genes during sexual reproduction |