Unit 4 Chapter 11 Fundamentals of Genetics

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Unit 4 Chapter 11Fundamentals of Genetics

• Section 11.1
• Mendels Legacy

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I) Gregor Mendel

• Genetics study of how traits characteristics
  are transferred from parent to _________
• Gregor Mendel Father of Genetics
• Combined
• Plant breeding
• Statistics
• Careful recordkeeping

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II) Mendels Experiment

• Mendel experiment
• garden peas with 7 characteristics to see which
  trait would be passed to offspring
• Traits specific inherited characteristics
• Example Characteristic
• Trait

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II) Mendels Experiments

• Mendel started growing peas that were pure for
  each trait
• Pure
• Mendel self-pollinated the peas until
• P1 generation

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II. Mendels Experiment

1. Mendel controlled the reproduction of the plants
   (___________)
2. Pollination pollen from reproductive parts of
   one flower is mixed w/ another flower

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II. Mendels Experiment

• Self-pollination mixing with the same
  plant/flower
• Cross-pollination mixing anther a different
  plant/flower

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II. Mendels Experiments

• Cross Pollinated
• Ex Characteristic Plant Height
• Trait Short x Tall
• Mendel recorded the results called the
  offspring the F1 generation

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Example

• P1 generation
• Pure Green x Pure Yellow __ generation

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II. Mendels Experiments

• 9) Mendel then crossed two F1 generation seeds

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Example

• P1 generation
• Pure Green x Pure Yellow __ generation
• F1 generation x F1 generation ____
  generation

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III) Mendels Results and Conclusions

1. there was a factor in pea controlling the
   traits
2. results varied btwn 2 traits he felt that the
   factor came in __________

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Example

• P1 generation Pure Green, Pure Yellow
• Pure Green x Pure Yellow F1 generation
• F1 generation 2 Green
• F1 gen. x F1 gen. F2 generation
• Green x Green 3 Green 1 Yellow
• F2 generation 3 Green 1 Yellow

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III. Recessive and Dominant Traits

• Mendel saw that one P1 trait would not show in
  the F1, and reappear in F2
• Dominant
• Recessive

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IV. Mendels Laws

1. Law of Segregation a pair of factors is
   segregated, or separated, during the formation of
   gametes

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IV. Mendels Laws

• Law of Independent Assortment factors for
  different characteristics are distributed to
  gametes independently

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V. Chromosomes and Genes

• Molecular Genetics study of structure and
  function of chromosomes and genes
• Genes are in pairs or alleles
• Alleles are represented by letters
• Dominant
• Recessive

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Think

• Do Ligers really exist?