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Grade 5 Chapter 3

vocabulary for grade 5 chapter 3

TermDefinition
acquired trait characteristic that an organism develops after it is born
chromosome short, thick coil of DNA
DNA molecule found in the nucleus of a cell and shaped like a double helix; associated with the transfer of genetic information
gene short segment of DNA that determines an organism's inherited traits
heredity genetic transfer of characteristics from parent to offspring
mutation change in the genes of an organism
nucleotide basic structural unit of DNA
adaptation change in a characteristic that helps an organism survive in its environment
asexual reproduction production of offspring from only one parent cell
dominant describes a trait that is expressed when an organism receives genes for two different forms of a trait
hybrid organism that has two different genes for the same trait
recessive describes a trait that is not expressed when an organism receives genes for two different forms of a trait
selective breeding practice of breeding organisms to get offspring with useful traits
sexual reproduction production of offspring by the union of male and female gametes
Created by: pjkk
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