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science ch.4

Chapter 4 vocab./terms

QuestionAnswer
acquired trait a characteristic that an organism develops after it is born
chromosomes short, thick coils of DNA
DNA a molecule found in the nucleus of a cell and shaped like a double helix; associated with the transfer of genetic information
gene a short segment of DNA that determines an organism's inherited traits
heredity the genetic trasfer of characteristics from parent to offspring
mutation a change in the genes of an organism
nucleotide the basic structural unit of DNA
adaptation a trait or characteristic that helps an organism survive in its environment
dominant being expressed when an organism receives genes for two different forms of a trait
hybrid an organism that has two different genes for the same trait
recessive not being expressed when an organism receives genes for two different forms of a trait
Created by: bteague