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Genetics Vocabulary
key vocabulary for Genetics Unit
Term | Definition |
---|---|
trait | The different forms of a characteristic (dimples: present or absent). |
alleles | The letters that represent the different forms of a gene (dimples D = present or d =absent). |
heterozygous/ hybrid | When two alleles (letters) are different for one trait (ex. Dd). |
chromosomes | This is what contains your genes. |
phenotype | The physical appearance of a trait (ex. hair color). |
gene | The factor that controls the trait you exhibit or show. |
homozygous/purebred | When two alleles (letters) are the same(ex. DD). |
recessive | The trait that hides in the background (lowercase letter) and can only be expressed in homozygous form. |
dominant | The trait that overshadows and is expressed (capital letter). |
heredity | The passing of physical characteristics from parents to offspring. |
genotype | The combination of alleles or letters (ex. DD, Dd, dd). |
genetics | The scientific study of heredity. |