| A | B |
|---|
| genetics | study of heredity |
| DNA | chromosomes are made of |
| fertilization | sperm cell unites with egg |
| 46 | number of chromosomes in human body cell |
| 23 | number of chromosomes in human sex cell |
| nucleus | cell part where chromosomes are |
| zygote | first cell of new living thing |
| father of genetics | Gregor Mendel |
| pea | type of plant Mendel studied |
| trait | a characteristic |
| offspring from parent generation | F1 |
| dominant | gene whose trait always shows |
| recessive | gene that can be masked unless their are two |
| genotype | the genes you have for a trait are your ____ |
| phenotype | the appearance or physical trait |
| homozygous | two alleles are the same |
| heterozygous | two alleles are different |
| hybrid | same as heterozygous |
| pure | same as homozygous |
| gene | a segment of DNA that codes for a trait |
