Gilson Col

Notes

Gilson College 2025 SEMESTER 2 YEAR 9 EXAMS Science - Complete definition booklets Term 3 - Reproduction • Organism An individual formed through reproduction. • Somatic cells Cells containing all the DNA needed to create a new organism. • Meiosis A type of cell division involved in producing gametes. • Mitosis A type of cell division for growth and repair. • Gametes/Sex cells Reproductive cells (sperm and egg) that carry genetic information. • Chromosomes Segments of DNA; humans have 46. • Genes Parts of DNA with instructions for specific traits or functions in offspring. • DNA Coded instructions for life (deoxyribonucleic acid). • Fertilization The process where male (sperm) and female (egg) gametes fuse to form a zygote. • Zygote A fertilized egg resulting from sexual reproduction. • Embryo An unborn offspring in development. • Fetus Stage of an unborn mammal after the embryo. • Placenta Temporary organ in the uterus that nourishes the fetus during pregnancy. • Gestation The period needed for an embryo to develop into a fully formed individual. • Baby A very young child. • Sexual reproduction Used by plants and animals, it combine...