Slide 1: Welcome to the War Zone
The last team standing WINS!
Slide 2: • • • • • • • • •
Heredity Trait Genetics Gamete Fertilization Zygote Pollination Hybrid Allele
Genetics Vocabulary
• • • • • • • •
Make 3 airplanes. Write the definition of 3 of the terms above on your airplanes (1 per
Dominant Recessive Law of segregation Phenotype Genotype Homozygous Heterozygous Law of independent assortment
Slide 3: Rules of engagement
• Goal is to knock out all other teams • Fly airplane into other groups • Person must read definition and choose correct term • If wrong term, person who threw the plane must answer correctly to knockout other person • Person may throw one last time to stay in the game • Teacher is ultimate decisionmaker
Slide 4: Now the battle is over
Slide 5: Genetics
Slide 10: Sex Cells
Not This!!
Slide 11: Sex Cells
That’s more like it!
Slide 12: Meiosis
Slide 13: We have
• Diploid cells • 46 chromosomes
– 23 pairs or HOMOlogous chromosomes – 2 copies of each chromosome
• 1 from mom • 1 from dad
Slide 14: We Need
• Haploid cells • 23 chromosomes • Sperm or egg
Slide 15: Start with 2
End with 1
Slide 17: Same genes
From Mom From Dad
Separate during Meiosis I
Slide 18: • Cuts # of chromosomes by half • 4 to 2 • Diploid to haploid
Slide 19: From mom or dad
Separate during Meiosis II
Slide 21: Prophase I: Homologues condense and synapse (overlap), exchanging DNA by 'crossing over'
Slide 22: Crossing Over Exchange DNA
Slide 23: Metaphase I: Homologues align in pairs
Slide 24: Anaphase I: Homologues separate; sister chromatids remain attached.
Slide 25: Telophase I (not shown): 2 new cells form. Each has 1 copy of each homologue, but still has duplicated sister chromatids
Slide 26: Prophase II
Slide 31: Overview
Slide 35: Get your lab notebooks
Slide 36: Copy chart into notebook
Chromosome Genotype Phenotype # or Alleles Homozygous or heterozygous Parts Needed
Slide 37: • 2 bags of chromosomes
– 1 mom – 1 dad
Process
• Combine mom and dads chromosomes • Fill in chart for baby reebop • Create baby reebop • Place on side table for class photo • Answer Questions
– P 263 to help
• Remove and match homologous chromosomes • Turn face down on table
– No letters showing
• Randomly choose 1 homologous
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