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24 Cards in this Set
- Front
- Back
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chromosomes
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human cells contain 23 pairs
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Genotype
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an organism that has inherited a gene for a particular trait but does not show that trait
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geneticist
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a scientist who studied how heredity works
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x and y chromosomes
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Chromosomes that determine a person's sex
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DNA
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the complex molecule that controls heredity
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genetic disorders
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Hemophilia an sickle-cell anemia are examples
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Pedigree
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a chart that traces the history of traits in a family
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mutation
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a change in an organism DNA i
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genetic engineering
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a way of changing an organism's DNA to produce a certain trait
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genome
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all of an organism's makes up
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gene splicing
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adding the genes fron one organism to the genes of another organism
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clone
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a living organism that is genetically identical to its parent because it has received all of its DNA form that parents
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gene
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the basic unit of heredity that is found on chromosomes
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heredity
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the passingof inherited traits from parents to offsping
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natural selection
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the survival of organism that are best suited to their environment
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Chromosome
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the structure in a cell's nucleus that contains genes.
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Dominant trait
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a trait that prevents the recessive form from appearing.
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variation
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a difference among members of the same species that helps individuals survive to reproduce
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acquired trait
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a trait affected by experience or the environment
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Hybrid
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an organism that has received two different forms of the same trait, one from each parent
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Genetic disorder
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a disease caused by a gene or a set of genes that changes unexpectedly
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Inherited trait
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a feature passed from parent to offspring
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recessive trait
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the hidden form of a trait
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gregor mendel
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he experimented with pea plants
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