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genetics
genetics and alleles and chromosomes
| Term | Definition |
|---|---|
| purebred | an animal bred from parents of the same breed or variety. |
| alleles | one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome. |
| Heterozygous | having two different alleles of a particular gene or genes. |
| homozygous | Homozygous is a word that refers to a particular gene that has identical alleles on both homologous chromosomes |
| hybrid | the offspring of two plants or animals of different species or varieties, |
| punnet squares | The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. |
| phenotype | The phenotype of an organism is the composite of the organism's observable characteristics or traits |
| genotype | The genotype is the part of the genetic makeup of a cell, and therefore of any individual, |
| recessive allele | A recessive allele is a variety of genetic code that does not create a phenotype if a dominant allele is present. |
| dominant allele | Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. |
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