| A | B |
|---|
| Created the foundation for genetics | Gregor Mendel |
| Passing of trait to offspring | heredity |
| scientific study of heredity | genetics |
| Two like genes or two of the same form of an allele | purebred |
| factors that control traits | genes |
| the allele that always shows up in an organism when the allele is present | dominant allele |
| allele that is masked or covered up | recessive allele |
| In order for a recessive trait to show up the organism must have | two or both of the recessive allele |
| When there is a dominant and a recessive allele (Rr) which shows up? | Dominant |
| Dominant alleles are written with _________ letters | capital |
| Recessive alleles are written with __________ letters | lower case |
| Used to predict the offspring's phenotype and genotype | Punnetts Square |
| The gene or allele combination (Gg) | Genotype |
| The mating of 2 organisms is called a ________ | cross |
| having one dominant and one recessive allele (one capital and one lower case letter) | hybrid |
| The physical appearance of an organism. | phenotype |
| Each sex cell gives _____ of the chromsomes. | 1/2 |
| all of the possible outcomes of a genetic cross is found in a _________. | Punnett Square |
| Chromosomes of a male | XY |
| Chromosomes of a female | XX |
| A chart that tracks which members of a family have a particular trait | Pedigree |
| Filled in circle in a pedigree chart means | infected female |
| a circle half filled in is a | carrier female |
| filled in square in a pedigree chart is a | infected male |
| Who determines sex of an offspring? | Male, not the female because they have two Xs and they will always give the X but the male has an X and a Y, so if he gives an X it will be a girl, if he gives a Y it will be a boy |
