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Science Unit D-2

gene a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
genetics the study of heredity and the variation of inherited characteristics.
inherited trait a trait that a person gets from a parent or grandparent
acquired trait characteristics that are gained by an organism after birth as a result of external influences or its own activities that change its structure or function and cannot be inherited
trait a distinguishing quality or characteristic, typically one belonging to a person.
mutation the changing of the structure of a gene, resulting in a variant form that may be transmitted to subsequent generations
allele one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
dominant most important, powerful, or influential
recessive that one of a pair of alternative alleles whose effect is masked by the activity of the second when both are present in the same cell organism.
homozygous if you're homozygous, you've got a pair of matching alleles, which are the two genes that control a particular trait
heterozygous the genetics term heterozygous refers to a pair of genes where one is dominant and one is recessive — they're different
phenotype the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment
genotype the genetic constitution of an individual organism
chromosome a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.
cell division the division of a cell into two daughter cells with the same genetic material.
DNA the fundamental and distinctive characteristics or qualities of someone or something, especially when regarded as unchangeable
co-dominant a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent.
incomplete dominance refers to a genetic situation in which one allele does not completely dominate another allele, and therefore results in a new phenotype
Created by: cpowalski85