Terms : Hide Images
| 169737422 | character | An observable heritable feature. | 0 | |
| 169737423 | trait | Any detectable variant in a genetic character. | 1 | |
| 169737424 | true-breeding | Plants that produce offspring of the same variety when they self-pollinate. | 2 | |
| 169737425 | hybridization | The mating, or crossing, of two true-breeding varieties. | 3 | |
| 169737426 | P generation | Parent individuals from which offspring are derived in studies of inheritance. | 4 | |
| 169737427 | F1 generation | The first filial, or hybrid, offspring in a series of genetic crosses. | 5 | |
| 169737428 | F2 generation | Offspring resulting from the interbreeding of the hybrid F1 generation. | 6 | |
| 169737429 | allele | Any of the alternative versions of a gene that produce distinguishable phenotypic effects. | 7 | |
| 169737430 | dominant allele | Any allele that is fully expressed in the phenotype of a heterozygote. | 8 | |
| 169737431 | recessive allele | The phenotypic effect of this allele is not shown in a heterozygote. | 9 | |
| 169737432 | law of segregation | Mendel's first law, stating that two alleles in a pair separate into different gametes during gamete formation. | 10 | |
| 169737433 | homozygous | Having two identical alleles for a given gene. | 11 | |
| 169737434 | heterozygous | Having two different alleles for a given gene. | 12 | |
| 169737435 | phenotype | The physical and physiological traits of an organism, which are deterimined by its genetic makeup. | 13 | |
| 169737436 | genotype | The genetic makeup, or set of alleles, of an organism. | 14 | |
| 169737437 | testcross | Breeding an organism of an unknown genotype with a homozygous recessive individual to determine genotype. The ratio of phenotypes in the offspring reveals the unknown genotype. | 15 | |
| 169737438 | monohybrid | An organism heterozygous with respect to a single gene of interest. Includes all offspring from a cross between parents homozygous for different alleles. Ex. Aa | 16 | |
| 169737439 | dihybrid | An organsim heterozygous with respect to two genes of interest. Includes all offspring from a cross between parents who are doubly homozygous for different alleles. Ex. AaBb. | 17 | |
| 169737440 | law of independent assortment | Mendel's second law which states that each pair of allele segregates independently of each other pair during gamete formation. Applies when genes for two characters are on different pairs of homologous chromosomes. | 18 | |
| 169746449 | complete dominance | Phenotypes of a heterozygote and dominant homozygote are indistinguishable. | 19 | |
| 169746450 | incomplete dominance | Phenotype of a heterozygote is intermediate between the phenotype of homozygotes for either allele. | 20 | |
| 169746451 | codominance | The phenotypes of both alleles are exhibited in the heterozygote because both alleles affect the phenotype in separate, distinguishable ways. | 21 | |
| 169746452 | pleiotropy | The ability of a single gene to have multiple affects. | 22 | |
| 169746453 | epistasis | One gene alters the phenotypic effects of another gene that is independently inherited. | 23 | |
| 169746454 | quantitative character | A heritable feature that varies continuously over a range rather than in an either-or fashion. | 24 | |
| 169746455 | polygenic inheritance | An additive effect of two or more genes on a single phenotypic character. | 25 | |
| 169746456 | norm of reaction | Range of phenotypes produced by a single genotype, due to environmental influences. | 26 | |
| 169746457 | multifactorial | Referring to a phenotypic character that is influenced by multiple genes and environmental factors. | 27 | |
| 169746458 | carrier | A individual who is heterozygous at a given genetic locusm, with normal and one recessive allele. The heterozygote is phenotypically dominant for the character determined by the gene but can pass on the recessive allele to offspring. | 28 |
