| A | B |
|---|
| reproduction | process by which organisms produce offspring; 1 of the 7 Life Processes |
| variation | differences between organisms of the same (or different) species |
| characteristic feature | a feature that helps to identify, tell apart, or describe recognizably |
| environment | the conditions surrounding an organism; upbringing |
| genes | units of genetic information found on the chromosomes; a code for a specific characteristic |
| DNA | a complex chemical that carries genetic information |
| chromosome | a long piece of DNA which is made of many gene |
| gamete | a sex cell |
| zygote | a fertilized egg |
| fertilization | the process by which the male and female gametes join to form a zygote |
| identical twins | 2 babies born on the same day, that developed from 1 egg that split just after it was fertilized |
| non-identical twins | 2 babies born on the same day, that developed from 2 different eggs at more or less the same time |
| *continuous variation | a characteristic feature that can vary over a range of values; e.g. height, weight, foot length |
| *discontinuous variation | a characteristic feature that can only take on certain values; e.g. blood type, eye color |
| *embryo | organism in its early stages of development |
| *fraternal twins | non-identical twins |
| ovum | the female gametes / sex cell |
| sperm | the male gametes / sex cell |
