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Gene Combo

Gene Combo. Lesson #59 2-7-12. 2-7-12 Bell Work:. There is always one trait more dominant than another trait. For example: Brown eyes are always dominant over blue eyes. My friend has brown eyes. What color eyes do you think her parents have? Why do you think this?.

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Gene Combo

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  1. Gene Combo Lesson #59 2-7-12

  2. 2-7-12 Bell Work: • There is always one trait more dominant than another trait. • For example: Brown eyes are always dominant over blue eyes. • My friend has brown eyes. What color eyes do you think her parents have? • Why do you think this?

  3. Review from last week: • What did you learn from creature features?

  4. 2-7-12 Objective: • I will make a model of how genes are passed on from parents to offspring. • HW: None!

  5. Vocabulary: • Allele- ½ of a possible gene combination. For example: ½ of your eye color gene comes from your mom and ½ of your eye color gene comes from your dad. Each is called an allele. • Dominant-The allele that wins over the other allele. For example: Your mom has brown eyes and your dad has blue eyes your mom’s allele wins and you have brown eyes (usually). • Recessive-The allele that does not win.

  6. Procedure: • Toss a coin to find out which allele’s each creature gets. • If you get a head, it means that it is Lucy’s allele and you record it as a little t. A little t is orange. • If you get a tail, it means that it is Ocean’s allele and is recorded with the letter T. A big T is blue.

  7. Procedure Continued: • Decide who will be Ocean and who will be Lucy. • Ocean goes first. • Flip the coin and see what you get. • Let’s practice: • If Ocean got a head then he writes a little t, if Ocean got a tail, he writes a big T. • Heads=little t • Tails=big T

  8. Procedure Continued: • Filling in your sheet. • If you get a head it is written like this t. • If you get a tail it is written like this T. • Remember that the blue tail dominates over the orange tail.

  9. Example sheet

  10. Closure: If you have the tail alleles of Tt, what color is the tail?

  11. Long Term Review: • What controls the cell?

  12. Procedure: • http://player.discoveryeducation.com/index.cfm?guidAssetId=B6A763ED-FEAB-41F5-982C-89672AF47AFF&blnFromSearch=1&productcode=US

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