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Life Science Vocab

Life Science (Physical Science)

TermDefinition
Adaptation A characteristic that improves an individual's ability to survive and reproduce in a particular environment.
Allele Alternative versions of genes that account for trait variations in organisms.
Ancestor an organism from which other groups of organisms are descended.
Chromosomes Threadlike structures made of DNA molecules that contain the genes.
Diversity variety of life.
Dominant Allele A trait whose phenotypic effect is always observed if it is present in the gene.
Embryo Early stages of development in organisms.
Extinction A species that no longer has any known living individuals.
Function A description of how an organism, organ, or process normally works or what it can do.
Gene Sequence of DNA that codes for a protein and thus determines a trait.
Genetic Engineering The process of manipulating or altering the genetic material of a cell to produce a desirable trait in the organism.
Genome A complete set of chromosomes in an organism.
Genotype An organism's genetic makeup, or allele combinations.
Heredity The passing of genetic material from one generation to another, usually through sexual reproduction.
Homologous Structures in different species that are similar in arrangement because of common ancestry.
Mutation A change in the genetic code of an organism.
Natural Selection A process resulting in the survival and reproduction of organisms best adapted to the environment.
Phenotype An organism's physical appearance, or visible traits.
Population group of individuals of the same species that live in the same area.
Structure Internal and external bodily arrangement that allows for growth, survival, behavior, and reproduction.
Trait A characteristic that an organism can pass on to its offspring through its genes.
Artificial Selection Selective breeding of plants and animals by humans to promote the occurrence of desirable traits in offspring.
DNA Deoxyribonucleic Acid - Genetic Information.
Evolution A process by which modern organisms have changed from ancient organisms over time.
Recessive Allele A trait whose phenotypic effect is not observed if the opposite trait is present.
Created by: Baldwin Ramsey
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