Gregor Mendel, an Austrian monk, is the Father of Genetics. He discovered and pioneered genetic research forming basic principles of heredity. Mendel studied how traits are passed from one generation to the next.
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| 1056259181 | CHROMOSOMES | Threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins. |  | 0 |
| 1056259182 | ALLELE | Alternative form of a gene. |  | 1 |
| 1056259183 | RECESSIVE | Describes a trait that is covered over, or dominated, by another form of that trait and seems to disappear. |  | 2 |
| 1056259184 | DOMINANT | Describes a trait that covers over, or dominates, another form of that trait. |  | 3 |
| 1056259185 | HOMOZYGOUS | Organism that has two identical alleles for a trait |  | 4 |
| 1056259186 | HETEROZYGOUS | Organism that has two different alleles for a trait |  | 5 |
| 1056259187 | PHENOTYPE | Organism's physical appearance, or visible traits. |  | 6 |
| 1056259188 | GENOTYPE | Genetic makeup of an organism |  | 7 |
| 1056259189 | PUNNETT SQUARE | Chart showing all possible combinations of alleles that can result from a genetic cross |  | 8 |
| 1056259190 | PROBABILITY | Number describing how likely it is that an event will occur |  | 9 |
| 1056259191 | MONOHYBRID CROSS | Cross between individuals involving one pair of contrasting traits |  | 10 |
| 1056259192 | DIHYBRID CROSS | Cross between individuals that have different alleles for the same gene |  | 11 |
| 1056259193 | LAW OF DOMINANCE | In many traits one allele is dominant over the other allele. The weaker, recessive allele is only expressed when it is paired with another recessive allele. |  | 12 |
| 1056259194 | LAW OF SEGREGATION | First law of heredity stating pairs of alleles for a trait separate when gametes are formed. |  | 13 |
| 1056259195 | LAW OF INDEPENDENT ASSORTMENT | Each member of a pair of homologous chromosomes separates independently of members of other pairs so results are random |  | 14 |
