click below
click below
Normal Size Small Size show me how
genetics
11.1
| Term | Definition |
|---|---|
| genetics | the study of heredity and the variation of inherited characteristics. |
| fertilization | the action or process of fertilizing an egg, female animal, or plant, involving the fusion of male and female gametes to form a zygote. |
| trait | a distinguishing quality or characteristic, typically one belonging to a person. |
| true-breeding | The alleles for these type of plants are homozygous. |
| hybrid | the offspring of two plants or animals of different species or varieties |
| segregation | method of breeding that allows only those organisms with desired characteristics to produce the next generation |
| independent assortment | one of Mendel’s principles that states that genes for different traits can segregate independently during the formation of gametes |
| gametes | sex cells |
| homozygous | having two identical alleles for a particular gene |
| helrzygous | having two different alleles for a particular gene |
| phenotype | physical characteristics of an organism |
| genotype | genetic makeup of an organism |
| dominant | the one that hides the recessive trait |
| recessive allele | the trait that is hidden by the dominant trait |
| incomplete doninance | situation in which one allele is not completely dominant over another allele |
| codominance | situation in which the phenotypes produced by both alleles are completely expressed |
| punnett square | diagram that can be used to predict the genotype and phenotype combinations of a genetic cross |
| multiple allele trait | a gene that has more than two alleles |
| polygenic trait | trait controlled by two or more genes |
| sex-linked trait | gene located on a sex chromosome |
| carrier | organism that has inherited a recessive allele for a genetic trait or mutation but does not display that trait or show symptoms of the disease |
| autosome | chromosome that is not a sex chromosome |