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Chromosomes are made of sections of DNA called genes. B. _____________. Genes are always in pairs. Each chromosome has many gene pairs. Cell with chromosomes inside the nucleus. DNA. sugars. nitrogen bases. Purposes of Cell Division. fold. Purposes of in Humans. Cel l. D i v
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Chromosomes are made of sections of DNA called genes. B. _____________ Genes are always in pairs. Each chromosome has many gene pairs. Cell with chromosomes inside the nucleus
DNA sugars nitrogen bases
fold Purposes of inHumans Cel l D i v i s i o n Growth & Repair Reproduction cut
Purpose: Cell division for reproduction creates offspring with traits from both mother and father. Called:MEIOSIS makes
MOM DAD X X X X X X X X sperm egg / / / / / / / / / / / / \ \ \ \ offspring (reproduction)
Purpose: Cell division for growth and repair creates exact copies of a cell. Called:MITOSIS “My toe-sies”
X X X X Skin Cell X X X X Skin Cell exact copy (growth & repair)
Quick Quiz: • Meiosis makes _____. • The purpose of meiosis is ______________. • Meiosis create egg and sperm cells with _____ the original chromosomes. • Egg and Sperm combine to create an __________ with unique traits. • Mitosis can be compared to a ______________. • Mitosis makes exact ______ of the original cell. • The purpose of mitosis is ________ and _______ of organisms. me reproduction half offspring copy machine copy growth repair