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1/18/13 Bell Ringer

1/18/13 Bell Ringer. Objective: To review for the final exam. What is the equation for photosynthesis? What is the equation for cellular respiration?. Agenda. Study guide questions? Punnett square practice Meiosis. Punnett Squares. Steps.

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1/18/13 Bell Ringer

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  1. 1/18/13 Bell Ringer Objective: To review for the final exam What is the equation for photosynthesis? What is the equation for cellular respiration?

  2. Agenda Study guide questions? Punnett square practice Meiosis

  3. Punnett Squares Steps In dogs, erect ears (E) is dominate over droopy ears (e). What are the results if two heterozygous dogs have a litter of puppies. 1. Create a KEY Dominant, recessive Heterozygous (different) Homozygous (same) 2. Figure out what the parents are 3. Create a punnett square 4. Solve

  4. Punnett Squares Steps Sully is from a species called Blutons. Most Blutons either have short horns or long horns. Short horns are dominant (H) and long horns are recessive (h). If a female Bluton with long horns has a child with a male Bluton with heterozygous short horns, what are the chances that their offspring will have long horns? 1. Create a KEY Dominant, recessive Heterozygous (different) Homozygous (same) 2. Figure out what the parents are 3. Create a punnett square 4. Solve

  5. Steps Buzz Lightyear’s cleft chin (chin dimple) is a dominant trait. Jessie does not have a cleft chin. Buzz’s cleft chin is homozygous (he is purebred). What is the probability of their offspring inheriting and not inheriting a cleft chin? 1. Create a KEY Dominant, recessive Heterozygous (different) Homozygous (same) 2. Figure out what the parents are 3. Create a punnett square 4. Solve

  6. The ability to roll the tongue (R) is determined by a dominant gene while the recessive gene results in the inability to roll the tongue (r). • A man and his wife can both roll their tongues and are surprised to find that their son cannot. • Explain this by showing the genotypes of all three persons. (Note: you do not need to do a Punnett Square for this problem).

  7. Co-Dominance Steps In crocus flowers, white (Fw) and purple (FP) colors are co-dominant, and result in a purple and white striped flower when both genes are present. What are the possible results from the cross-pollination of a striped crocus with a white crocus? 1. Create a KEY Dominant, recessive Heterozygous (different) Homozygous (same) 2. Figure out what the parents are 3. Create a punnett square 4. Solve

  8. Your dog has straight hair (H). He is a homozygous for straight hair. Your friend’s dog has curly hair (h) and is homozygous. Straight hair is dominant and curly is recessive. They have a puppy, will it have curly or straight hair. What is the possibility of each?

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