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Ch 10-2: Sexual Reproduction & Meiosis 1.) Sexual Reproduction - the joining of 2 sex cells (egg & sperm) which create new organisms 2.) Sperm - male sex cells 3.) Egg - female sex cells 4.) Fertilization - the joining of the egg and sperm, which forms a zygote 5.) Zygote - a diploid cell formed when sex cells join 6.) Diploid - a cell with pairs of chromosomes Body cells are diploid Think of: D for doubled and diploid Ex: human body cells have 46 chromosomes 7.) Haploid - cells with half the number of chromosomes as body cells Think of: H for half and haploid Ex: Humans sex cells have 23 chromosomes 8.) Meiosis- process that produces 4 haploid (sex) cells Ensures offspring will have the same number of chromosomes as the parent Study Tips for Meiosis: 1. Mitosis = my “toe” is a part of my body and mitosis makes body cells (diploid cells) 2. Meiosis = forms sex cells, “Me” was formed through sexual reproduction (haploid cells) 3. Diploid = double the number of chromosomes (body cells) 4. Haploid = half the number of chromosomes (sex cells)