| A | B |
|---|
| mitosis | cell process in which the nucleus divides |
| chromosome | structure in a cell's nucleus that contains hereditary material |
| asexual reproduction | a new organism is produced from one organism |
| sexual reproduction | an egg and a sperm unite to form a zygote |
| sperm | haploid sex cell formed in the male reproductive organs |
| egg | haploid sex cell formed in the female reproductive organs |
| fertilization | the joining of a sperm and egg |
| zygote | new diploid cell formed when a sperm fertilizes an egg |
| diploid | cell whose similar chromosomes occur in pairs |
| haploid | cell that has half the number of chromosomes as body cells |
| meiosis | reproductive process that produces four haploid sex cells |
| DNA | the genetic material of all organisms |
| Gene | section of DNA on a chromosome that contains instructions for making specific proteins |
| RNA | a type of nucleic acid that carries codes for making proteins |
| mutation | any permanent change in a gene or chromosome |
