| A | B |
|---|
| meiosis | cell division in which gametes are formed |
| genetics | study or inheritance |
| xx | these two chromosomes represents a female |
| xy | these two chromosomes represent a male |
| Genetic engineering | gene from one species is transferred into the DNA of another species. |
| 23 | The number of pairs of chromosomes in humans. |
| genes | Mendel's units of heredity |
| Gregor Mendel | Father of modern genetics |
| mutagens | These cause mutations |
| mutations | These cause a mistake in replication of the DNA sequence. |
| protein | A change in the DNA sequence causes a different_______to be made. |
| Reginald Punnett | He developed a diagram used to predict traits in offspring |
| four bases of DNA | Adenine, Thymine, Guanine and Cytesine |
| guanine | What is missing: Adenine Cytosine Thymine ____? |
| adenine | What is missing: Thymine, Guanine Cytosine |
| double helix | shape of DNA |
| Watson and Crick | Discovered the DNA molecule |
| Punnett Square | diagrams used to predict traits in offspring |
| Phenotype | genetic trait that an organism shows |
| genotype | gene combination |
| dominant trait | This is represented by two capitalized letters |
| recessive trait | This is represented by two small case letters |
| hybrid | Represented by a capital letter followed by a small case letter |
| Selective breeding | process of choosing and mating organisms with desired traits |
| gametes | sex cells |
| egg and sperm | sex cells or gametes |
