| A | B |
|---|
| Asexual reproduction | Prcoess by which a new organism is produced that has DNA identical to the DNA of the parent organism |
| Zygote | New diploid cell that is formed when a sperm fertilizes an egg |
| Diploid | Describes a cell having pairs of chromosomes |
| DNA | Chemical that contains an organism's information code and is found in the cell nucleus; is made up of two twisted strands of sugar-phosphate molecules and nitrogen bases. |
| Egg | Sex cell that is formed in the reproductive organs of a female and has only half the number of chromosomes of a body cell |
| Fertilization | Joining of an egg and a sperm, generally from two different organisms |
| Gene | Section of DNA on a chromosome that directs the making of a specific protein |
| Haploid | Describes a cell that does not have pairs of chromosomes |
| Meisosis | Process by which sex cells are created in the reproductive organs, producing four haploid sex cells from one diploid cell |
| Mitosis | Series of continous steps in which the cell nucleus divides to form two identical nuclei. |
| Mutation | Any permanent change in a gene or chromosome of a cell |
| RNA | Nucleic acid that carries codes for making proteins from the nucleus to the ribosomes |
| Sexual reproduction | Process by which a new unique organism is created when two cells, an egg and a sperm, come together. |
| Sperm | Sex cell produced in the reproductive organs of a male and that has only half the number of chromosomes of a body cells; has a whiplike tail that provides motion and a head that contains genetic information |
| Chromosomes | Structures in the cell nucleus that contain hereditary material |
