| A | B |
|---|
| trait | a characteristic that an organism can pass on to its offspring |
| heredity | A set of traits an organism receives from its parents |
| genetics | study of heredity |
| gene | unit that determines traits |
| alleles | differents froms of a gene |
| dominant | covers up the appearance of the recessive gene |
| recessive | gene that is hidden |
| phenotype | trait that an organism displays |
| genotype | alleles of a gene an organism contains |
| probability | chance an events will occur |
| codominance | organism that has both alleles of a gene displays both phenotypes at the same time |
| polygenic traits | traits that are determined by more than one gene |
| DNA | Genetic material that is passed from parent to offspring |
| cytosine | forms a base pair with guanine |
| guanine | forms a base pair with cytosine |
| adenine | forms a base pair with thymine |
| thymine | forms a base pair with adenine |
| chromosome | a structure made of DNA and protein in the nucleus |
| haploid | half set of chromosomes |
| diploid | double set of chromosomes |
| mitosis | process of cell division where the nucleus divides into two nuclei |
| meiosis | cell division that produces sex cells with half the number of chromosomes |
| zygote | a fertilized egg |
| fertilization | union of egg and sperm |
| asexual reproduction | type of reproduction that requires only one parent |
| disorder | abnormal condition |
| mutation | change in hereditary material |
| genome | total amount of hereditary material in a single cell |
