Investigation 2 Part 2 Vocabulary

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Presentation transcript:

Investigation 2 Part 2 Vocabulary Allele: D: variations of genes that determine traits in organisms; the two corresponding alleles on paired chromosomes constitute a gene P: Chromosome: D: a structure made of coiled DNA that transfers hereditary information to the next generation P: Dominant: D: a form of gene that is expressed as the trait when a dominant allele is present P: deoxyribonucleic acid (DNA): D: a molecule that contains an organism’s genetic information P:

Investigation 2 Part 2 Vocabulary Feature: D: a structure, characteristic, or behavior of an organism, such as eye color, plant height, or timing of migration P: Gene: D: the basic unit of heredity carried by the chromosomes; codes for proteins which determine the traits of an organism P: Generation: D: offspring that are at the same stage of descent from a common ancestor P: Genome: D: an organism’s complete set of DNA P:

Investigation 2 Part 2 Vocabulary Genotype: D: an organism’s particular genetic makeup P: Heredity: D: the passing of traits from parent to offspring P: Homozygous: D: a gene composed of two identical alleles P: Heterozygous: D: a gene composed of two different alleles (a dominant and a recessive) P:

Investigation 2 Part 2 Vocabulary Inherited Characteristics: D: a genetic trait that an ancestor passes on to its descendants P: Phenotype: D: the traits produced by the genotype; the expression of genes P: Protein: D: a molecule that is part of cells and cell structures; determines the traits of an organism P: Population: D: all the individuals of one kind in a specified area at one time P:

Investigation 2 Part 2 Vocabulary Recessive: D: a form of a gene that is expressed only when a dominant allele is not present P: Trait: D: the specific way a feature is expressed in an individual organism; for example, blue and green eyes are traits for eye color P: Variation: D: the range of expression of a trait within a population P: