| A | B |
|---|
| Nucleus | Where the chromosomes are stored |
| Chromosomes | Made of supercoiled DNA and protein |
| Gene | Length of DNA which codes for a protein |
| Cytoplasm | Where proteins are made using the genetic code |
| Forty six | Number of chromosomes in a human body cell |
| Twenty three | Number of unpaired chromosomes in a gamete |
| Female | Gender of a person with XX chromosomes |
| Male | Gender of a person with XY chromosomes |
| Protein | What a gene codes for |
| Offspring | Another word for children |
| Development | The process of change during a cells life. Controlled by its genes |
| Nucleic acid | DNA is a molecule of this type |
| Replication | This has to happen to DNA before a cell divides |
| Gamete | A sex cell |
| Sperm | The gamete with either an X chromosome or a Y chromosome in its nucleus |
| Enzymes | Important proteins coded for by genes. They control chemical reactions in the cytoplasm |
| Species | A type of organism. Each has a particular number of chromosomes in their nucleus |
| Sex chromosomes | The name given to the 23rd pair of chromosomes in humans |
| Parents | You inherited your chromosomes from these people |
| Egg | This gamete always has an X chromosome, never Y |
