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Monday, February 24, 2014

Monday, February 24, 2014. Complete the handout: Modeling Mitosis and Meiosis. You can use your notes!. Reminder: MOY II Wednesday!. Predict the baby’s traits. Here are your parents traits: Mom: Dad : Dimples= dd No dimples=DD Freckles=FF Freckles=FF

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Monday, February 24, 2014

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  1. Monday, February 24, 2014 • Complete the handout: Modeling Mitosis and Meiosis. • You can use your notes! Reminder: MOY II Wednesday!

  2. Predict the baby’s traits Here are your parents traits: Mom:Dad: Dimples=dd No dimples=DD Freckles=FF Freckles=FF Predict their offspring’s traits by giving a percentage that the baby will have dimples and freckles

  3. Gregor Mendel 1822-1884 • Father of modern genetics • Used pea plants to demonstrate that certain traits were inherited and followed patterns

  4. Characteristics of the pea plants Mendel studied: • Seed Shape • Seed Color • Tall vs. Short Plants • Flower Color

  5. Mendel’s Accomplishments: • Used Punnett squares to predict probability of a trait being expressed • Gene vs. Allele • Heterozygous and Homozygous alleles • Genotype and Phenotype

  6. Mendel’s Accomplishments: Alleles can be… Dominant Traits Recessive Traits

  7. Mendel’s Accomplishments: Incomplete Dominance Codominance

  8. IncompleteDominance • Incomplete dominance: heterozygotes have a unique phenotype that is often ‘in between’ the parental types

  9. Co-Dominance In a certain fish, blue scales and red scales are codominant. What happens if you breed this fish with a fish that only has Blue Scales. What’s the percentage the baby will have patches? (use a Punnett square) Mom Dad • Genotypes of the parents • B R = patchwork fish • B B = blue fish (Dad) • R R = red fish (Mom)

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