Class Genetics Survey

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Class Genetics Survey

  1. 1. DQ 2-25-10 <ul><li>What is genetics? </li></ul><ul><li>What is a trait? </li></ul>
  2. 2. Class Genetics Survey <ul><li>Problem: Are traits controlled by dominant alleles more common than traits controlled by recessive alleles? </li></ul><ul><li>Page 92 in book </li></ul>
  3. 3. Period 7 No smile dimples Smile dimples F Smooth Chin Cleft Chin E Straight Hair (&wavy) Curly Hair D No widow’s peak Widow’s Peak C No Hair on fingers Hair on Fingers B Attached Ear Lobes Free Ear lobes A Number Trait 2 Number Trait 1 Total Number Students: ______ Data Table
  4. 4. Class Trait Numbers
  5. 6. Conclusion Questions <ul><li>The traits listed under Trait 1 in the data table are controlled b dominant alleles. The traits listed under Trait 2 are controlled by recessive alleles. List the traits controlled by dominant alleles that were shown by a majority of students (more than half the class): </li></ul><ul><li>List the traits controlled by recessive alleles that were shown by a majority of students (more than half the class): </li></ul>
  6. 9. <ul><li>http://www.ncrtec.org/tl/camp/gene/thumbs.htm </li></ul>No hitchhiker’s thumb Hitchhiker’s thumb
  7. 10. <ul><li>Clinodactyly </li></ul><ul><li>(bent pinky finger) </li></ul>
  8. 11. Period 1 No smile dimples Smile dimples F Smooth Chin Cleft Chin E Straight Hair (&wavy) Curly Hair D No widow’s peak Widow’s Peak C No Hair on fingers Hair on Fingers B Attached Ear Lobes Free Ear lobes A Number Trait 2 Number Trait 1 Total Number Students: ______ Data Table
  9. 12. Class Trait Numbers
  10. 13. Period 2 No smile dimples Smile dimples F Smooth Chin Cleft Chin E Straight Hair (&wavy) Curly Hair D No widow’s peak Widow’s Peak C No Hair on fingers Hair on Fingers B Attached Ear Lobes Free Ear lobes A Number Trait 2 Number Trait 1 Total Number Students: ______ Data Table
  11. 14. Class Trait Numbers
  12. 15. Period 5 No smile dimples Smile dimples F Smooth Chin Cleft Chin E Straight Hair (&wavy) Curly Hair D No widow’s peak Widow’s Peak C No Hair on fingers Hair on Fingers B Attached Ear Lobes Free Ear lobes A Number Trait 2 Number Trait 1 Total Number Students: ______ Data Table
  13. 16. Class Trait Numbers
  14. 17. Period 6 No smile dimples Smile dimples F Smooth Chin Cleft Chin E Straight Hair (&wavy) Curly Hair D No widow’s peak Widow’s Peak C No Hair on fingers Hair on Fingers B Attached Ear Lobes Free Ear lobes A Number Trait 2 Number Trait 1 Total Number Students: ______ Data Table
  15. 18. Class Trait Numbers

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