Types of Reproduction& Chromosomes Key Concepts: What are the Differences between asexual and sexual reproduction? 2. What is a chromosome? 3. Why do different cells have different numbers of chromosomes? Key Vocabulary: Asexual Sexual Chromosome Haploid Diploid

Reproduction: Producing Offspring Sexual Reproduction Asexual Reproduction One Parent Offspring Identical “clones” Mitosis (making body cells) Advantage: Fast Disadvantages: At risk for disease! Two Parents Offspring Different Variation (differences) Meiosis (making sex cells) Advantages: Genetic Diversity - Survival Disadvantages: slower

Types of Asexual Reproduction Binary Fission Fragmentation Budding Vegetative Reproduction

What Are Chromosomes?

Our Chromosome Number __23_____chromosomes in sperm HUMANS HAVE: 46 total (2 sets of 23) __23_____chromosomes in sperm (haploid) __23_____ chromosomes in Egg 46 chromosomes in every body Cell. (diploid)

Key Terms Haploid Cells: Diploid Cells: Somatic Cells: Gametes: Fertilization Zygote

Karyotypes: and Homologous Chromosomes (pairs):

Comparison of Reproduction with Cell Divisions MITOSIS MEIOSIS ASEXUAL Makes Body cells (somatic) 1 cell 2 cells 1 division Genetically identical Cells (clones) Diploid cell  Diploid SEXUAL Makes Sex cells (gametes) 1 cell 4 cells 2 divisions Genetically Diverse (4 dif sperm/eggs) Diploid cell  Haploid

CROSSWORD INSTRUCTIONS: Give your crossword puzzle a name. Choose at least 15 words for your puzzle Make a clue list for both across and down Decorate Crossword! STEP 1: MAKE A KEY STEP 2: MAKE A BLANK PUZZLE STEP 3: Make the CLUES!