Campbell: Biology in Focus (AP).
Starr Taggart: Biology- The Unity and Diversity of Life.
Words are found in these textbooks (mostly Campbell).
Terms : Hide Images
| 9156767431 | character | an observable heritable feature that may vary among individuals | 0 | |
| 9156767432 | trait | one of two or more detectable variants in a genetic character | 1 | |
| 9156767433 | true-breeding | referring to organisms that produce offspring of the same variety over many generations of self-pollination | 2 | |
| 9156767434 | hybrid | Crossing of two (2) different true-breeds | 3 | |
| 9156767435 | P generation | the true-breeding parent individuals from which F₁ hybrid offspring are derived in studies of inheritance; P= "parental" | 4 | |
| 9156767436 | F₁ generation | the first filial, hybrid (heterozygous) offspring resulting from a parental (P generation) cross | 5 | |
| 9156767437 | F₂ generation | the offspring resulting from interbreeding (self-pollination) of the hybrid (heterozygous) F₁ generation | 6 | |
| 9156767438 | allele | any of the alternative versions of a gene that may produce distinguishable phenotypic effects | 7 | |
| 9156767439 | dominant allele | an allele that is fully expressed in the phenotype of a heterozygote | 8 | |
| 9156767440 | recessive allele | an allele whose phenotypic effect is not observed in heterozygote | 9 | |
| 9156767441 | law of segregation | states that the two alleles in a pair segregate into different gametes during gamete formation | 10 | |
| 9156767442 | Punnett square | a diagram used in the studies of inheritance to show the predicted genotypic results of random fertilization in genetic crosses between individuals of known genotype | 11 | |
| 9156767443 | homozygous | having two identical alleles for a given gene (aa or AA) | 12 | |
| 9156767444 | heterozygous | having two different alleles for a given gene (Aa) | 13 | |
| 9156767445 | phenotype | the observable physical and physiological traits of an organism | 14 | |
| 9156767446 | genotype | the genetic makeup, or set of alleles, or an organism (AA, Aa, or aa) | 15 | |
| 9156767447 | testcross | breeding an organism of unknown genotype with a homozygous recessive individual to determine the unknown genotype | 16 | |
| 9156767448 | monohybrid | an organism that is heterozygous with respect to a single gene of interest. A cross between two organisms that are heterozygous for the character being followed | 17 | |
| 9156767449 | dihybrid | An organism that is heterozygous with respect to two genes of interest | 18 | |
| 9156767450 | law of independent assortment | states that each pair of alleles segregates independently of each other pair during gamete formation | 19 | |
| 9156767451 | complete dominance | the situation in which the phenotypes of the heterozygote and dominant homozygote are indistinguishable | 20 | |
| 9156767452 | incomplete dominance | the situation in which the phenotype of heterozygotes is intermediate between the phenotypes of individuals homozygous for either allele | 21 | |
| 9156767453 | codominance | the situation in which the phenotypes of both alleles are exhibited in the heterozygote because both alleles affect the phenotype in separate | 22 | |
| 9156767454 | pleiotrophy | the ability of a single gene to have multiple effects | 23 | |
| 9156767455 | epistasis | a type of gene interaction in which the phenotypic expression of one gene alters that of another independently inherited gene | 24 | |
| 9156767456 | polygenic inhertance | an additive effect of two or more genes on a single phenotypic character | 25 | |
| 9156767457 | pedigree | a diagram of a family tree with conventional symbols, showing the occurrence of heritable characters in parents and offspring over multiple generations | 26 | |
| 9156767458 | carrier | an individual who is heterozygous at a given genetic locus for a recessively inherited disorder | 27 |
