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

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Presentation transcript:

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 Predict their offspring’s traits by giving a percentage that the baby will have dimples and freckles

Gregor Mendel Father of modern genetics Used pea plants to demonstrate that certain traits were inherited and followed patterns

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

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

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

Mendel’s Accomplishments: Incomplete DominanceCodominance

Incomplete Dominance ● Incomplete dominance: heterozygotes have a unique phenotype that is often ‘in between’ the parental types

Genotypes of the parents B R = patchwork fish B B = blue fish (Dad) R R = red fish (Mom) 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) Co-Dominance Mom Dad