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| 9554870090 | mitosis | cell division in which the nucleus divides into nuclei containing the same number of chromosomes | 0 | |
| 9554881677 | meiosis | the process by which the number of chromosomes is reduced by half to form sex cells | 1 | |
| 9554888355 | interphase | first stage of the cell cycle, during which a cell grows, matures, and replicates its DNA | 2 | |
| 9554900428 | cytokinesis | division of the cytoplasm to form two separate daughter cells | 3 | |
| 9554903140 | prophase | Chromosomes become visible; nuclear envelope breaks down; crossing-over occurs. | 4 | |
| 9554905179 | metaphase | Chromosomes line up in the middle of the cell | 5 | |
| 9555708387 | anaphase | the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle | 6 | |
| 9555711587 | telophase | Division of the nucleus | 7 | |
| 9555753259 | F1 generation | the first generation of offspring obtained from an experimental cross of two organisms | 8 | |
| 9555755943 | F2 generation | Offspring resulting from interbreeding of the hybrid F1 generation. | 9 | |
| 9555758368 | test cross | Cross between an organism with an unknown genotype and an organism with a recessive phenotype | 10 | |
| 9555762188 | genotype | genetic makeup of an organism | 11 | |
| 9555781607 | phenotype | physical characteristics of an organism | 12 | |
| 9555783923 | recessive | trait of an organism that can be masked by the dominant form of a trait | 13 | |
| 9555786609 | dominant | trait that will show up in an organism's phenotype if gene is present | 14 | |
| 9555789232 | homozygous | having two identical alleles for a trait | 15 | |
| 9555791612 | heterozygous | having two different alleles for a trait | 16 | |
| 9555794162 | incomplete dominance | situation in which one allele is not completely dominant over another - a blend | 17 | |
| 9555797720 | codominance | a condition in which both alleles for a gene are fully expressed and equally dominant | 18 | |
| 9555804530 | allele | different forms of a gene | 19 | |
| 9555807587 | gene | a segment of DNA on a chromosome that codes for a specific trait | 20 | |
| 9555812110 | chromosome | tightly wound strand of genetic material or DNA | 21 | |
| 9555826259 | chromatid | one half of a duplicated chromosome | 22 | |
| 9555831659 | nondisjunction | error in meiosis in which the homologous chromosomes fail to separate properly | 23 | |
| 9555834553 | karyotype | picture of all of an organism's homologous chromosomes arranged in decreasing size | 24 | |
| 9555917206 | sex-linked | inheritance controlled by a gene on the X or Y chromosome | 25 | |
| 9555977532 | mutation | a permanent change in DNA | 26 | |
| 9556623125 | duplication | change to a chromosome in which part of the chromosome is repeated | 27 | |
| 9556628304 | deletion | the loss of all or part of a chromosome | 28 | |
| 9556633529 | inversion | the order of the genes in a section of a chromosome is reversed or switched | 29 | |
| 9556645146 | translocation | part of one chromosome breaks off and attaches to another | 30 | |
| 9556655242 | autosomal | any chromosome that is not a sex chromosome, body cells | 31 | |
| 9556658850 | pedigree | A diagram that shows the occurrence of a genetic trait in several generations of a family. | 32 | |
| 9556664637 | homologous chromosomes | Pair of chromosomes that are the same size, same appearance and same genes. | 33 | |
| 9556667532 | crossing over | Process in which homologous chromosomes exchange portions of their chromatids during meiosis. | 34 | |
| 9556669973 | recombination | the exchange of genetic material between homologous chromosomes, resulting from a cross-over event | 35 | |
| 9556676417 | map units | a unit of measurement of the distance between genes | 36 | |
| 9556680306 | frequency of recombination (RF) | the proportion of recombinant chromosomes among the total number of chromosomes observed | 37 |
