| A | B |
|---|
| genetics | the branch of biology which studies heredity |
| heredity | the study of how characteristics are passed from parents to offspring. |
| traits | characteristics which can be inherited are termed ____. |
| reproduction | gamates are the cells used for sexual ____ in an organism. |
| sperm | the male gamates. |
| ovules | the female gamates. |
| pollination | transfer of the male pollen grains to the female pistil of a flower. |
| fertilization | uniting of the male and female gamates. |
| hybrid | offspring of parents whose traits differ |
| mono | means one |
| second generation | children of the parents |
| first generation | parents |
| offspring | the children of the parents. |
| alleles | different forms of a gene. |
| dominant gene | always displays itself |
| recessive gene | only displays itself when no other gene is present. |
| phenotype | way an organism looks and behaves |
| genotype | what actual genes an organism has inherited. |
| homozygous | both genes affecting a trait are the same gene, the organism is ____. |
| heterozygous | both genes affecting a trait are different genes, the organism is ____. |
| dihybrid cross | two genes involved |
| monohybrid cross | only one characteristic is involved |
| pedigree | graphic representation of genetics in a family |
| allele | alternative form of a gene |
| gene | a portion of the DNA controlling one trait |
| linked gene | carried on a particular chromosome |
| punnett square | a graphic organizer to study the chances of an event |
| P1 | Parental Generation |
| F1 | Children of the parents |
| F2 | grandchildren of the parents |
